Sailboat Blocks

57mm Quad Block Swivel, Center Becket Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have... More Details

80mm Element Stand Up Block Stand-up blocks are an addition to our Element line. Use them for sheeting and halyard systems, running backstays, controls and other applications where you don’t want the ... More Details

60mm Element Stand Up Block Stand-up blocks are an addition to our Element line. Use them for sheeting and halyard systems, running backstays, controls and other applications where you don’t want the ... More Details

60mm Triple Aluminum Element Block with Swivel & Becket Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very... More Details

60mm Triple Aluminum Element Block with Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. ... More Details

60mm Double Aluminum Element Block with Swivel & Becket Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very... More Details

60mm Double Aluminum Element Block with Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. ... More Details

60mm Single Aluminum Element Block with Swivel & Becket Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very... More Details

60mm Single Aluminum Element Block with Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. ... More Details

45mm Triple Element Block with Swivel & Becket Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. ... More Details

45mm Triple Element Block with Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s... More Details

45mm Double Element Block with Swivel & Becket Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. ... More Details

45mm Double Element Block with Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s... More Details

45mm Single Aluminum Element Fiddle Block with Swivel, Becket & 150 Cam Cleat Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously... More Details

80mm Single Element Block Mastbase with Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. ... More Details

60mm Single Element Block Mastbase with Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. ... More Details

57mm Carbo Air Block with Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks ha... More Details

45mm Single Element Block with Swivel & Becket Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. ... More Details

45mm Single Element Block with Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s... More Details

40mm/29mm Carbo Traveler Block Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have... More Details

40mm Carbo Block with Spring & Eyestrap Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact bl... More Details

40mm Carbo Block Single with Swivel & Bracket Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, comp... More Details

40mm Carbo Block 90° Fixed Head Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks hav... More Details

40mm Carbo Air Fiddle Block with Swivel & Becket Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken® Black Magic® line, these small, compa... More Details

40mm Carbo Air Fiddle Block with Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken® Black Magic® line, these small, compact blocks... More Details

40mm Carbo Air Block with Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks ha... More Details

29mm Triple Carbo Air Block with Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact bl... More Details

29mm Double Carbo Air Block Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have ve... More Details

29mm Double Bullet Block with Becket Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets the... More Details

29mm Double Bullet Block Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks ad... More Details

75mm Carbo Air Block with Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks ha... More Details

40mm Carbo Air Block with Cam Cleat & Becket Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compa... More Details

40mm Carbo Air Double Fixed Block with Becket Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, comp... More Details

40mm Carbo Air Triple Swivel Block with Becket Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, com... More Details

40mm Carbo Air Triple Swivel Block Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks ... More Details

40mm Carbo Air Double Swivel Block with Becket Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, com... More Details

40mm Carbo Air Double Swivel Block Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks ... More Details

57mm Carbo Quad Block - Swivel Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very h... More Details

40mm Carbo Single Ratchet Block with Swivel Becket & Cam Cleat Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.  Features: Sheave Ø... More Details

40mm Carbo Single Ratchet Block with Swivel & Becket Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have on/... More Details

40mm Carbo Single Ratchet Block with Swivel Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have on/off switc... More Details

25mm Wire Block with Shackle Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Specifications: Sheave: 25mm / 1in. Weight: 28g / 1oz. Sha... More Details

22mm Triple Micro Block with Cam Cleat - Fishing Low-friction Micro blocks are compact and lightweight.  Specifications: Sheave: 22mm / 7/8in. Length: 51mm / 2in. Weight: 99g / 3.5oz. Maximum line: 6m... More Details

22mm Triple Micro Block with Becket - Fishing Low-friction Micro blocks are compact and lightweight.  Specifications: Sheave: 22mm / 7/8in. Length: 64mm / 2.5in. Weight: 64g / 2.25oz. Maximum line: 6m... More Details

22mm Triple Micro Block with Becket Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes. Spec... More Details

22mm Triple Micro Block Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes. Specifications: ... More Details

22mm Fiddle Micro Block with V-Jam & Becket Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all siz... More Details

22mm Fiddle Micro Block with V-Jam Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes. Speci... More Details

22mm Double Micro Block with Becket Low-friction Micro blocks are compact and lightweight.  Specifications: Sheave: 22mm / 7/8in. Length: 64mm / 2.5in. Weight: 43g / 1.5oz. Maximum line: 6mm / 1/4in. ... More Details

40mm Carbo Air Pivoting Lead Block with Aluminum Cam-Matic® Cleat High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “headknockers” on dinghies and b... More Details

57mm Carbo Block Flip Flop with Cam Small Boat Flip-Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows for various lead angles. Features: Sheave Ø (m... More Details

57mm Triple Carbo Block - Swivel, Becket, Cam Cleat Carbo Ratchets allow sailors to hand-hold loaded lines and offer a balance between holding power and controlled easing. Features: Sheave Ø (mm) 57 m... More Details

57mm Single Carbo Ratchet Cheek Block Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.  Features: Sheave Ø (mm): 57 mm Sheave Ø (in... More Details

57mm Carbo Single Ratchet Block with Swivel & Becket Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.  Features: Sheave Ø (mm): 57 ... More Details

57mm Carbo Single Ratchet Block with Swivel Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Features: On/off switch operates from ... More Details

16mm Triple Block with Becket The 16 mm is Harken’s smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls ... More Details

16mm Triple Block The 16 mm is Harken’s smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive... More Details

16mm Double Block with Becket  The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel ball... More Details

16mm Double Block The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captiv... More Details

Midrange Double Block Midrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast... More Details

Midrange Single with Aluminum Sheave Block Midrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball be... More Details

Midrange Single Block Midrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast... More Details

12mm Bolt-Down Fairlead - Single Harken Bolt-Down Fairleads are used on boats 6–15 m (20–50 ft) as shallow-angle line deflectors. These weight-saving fairleads are built of 6061-T6 Hard Lube-anodized ... More Details

38mm Double Big Bullet Block with Becket Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets... More Details

38mm Double Big Bullet Block Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these block... More Details

B285M Medium-Frequency CHIRP Transducer with Temperature - Bronze Thru-Hull with High Speed Fairing Block Features: Frequency: Chirp 85 - 135 kHz Power Rating: 1 KW Connector: 10 Pin Fairing Block: Hi... More Details

Size 2 Single Upright Block Plain Bearing Blocks Barton plain bearing blocks have a precision molded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of... More Details

WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov More Details

Series 5 54mm Crusier Blocks - Fiddle - Reverse Shackle Reverse Shackle Removable shackle that can be set in-line or at 90° to the sheave. This range of high load cruiser blocks are of rugged construc... More Details

Ratchet Block - 55mm The Barton Ratchet Block is designed to be used on mainsheet systems and spinnaker sheets on dinghies and keelboats and for small yachts up to 30 feet. Combining high-performance ... More Details