90mm Synchro Block, Double, 4,400lb. SWL, 30.62oz. from LEWMAR
Lewmar's Synchro blocks are more efficient, less expensive Lewmar's Synchro blocks combine geometry, sheave ratios and a unique free spin bearing, to deliver performance that’s comparable to ball and roller bearing blocks used in pro racing—at a more affordable price. Synchro blocks provide the optimal ratio between line size, sheave diameter and the interface between rope and sheave. This new range of blocks transforms performance, not only by improving efficiency, but also speed and handling.

72mm Synchro Block, Single, 2,420lb. SWL, 6.61oz. from LEWMAR
Lewmar's Synchro blocks are more efficient, less expensive Lewmar's Synchro blocks combine geometry, sheave ratios and a unique free spin bearing, to deliver performance that’s comparable to ball and roller bearing blocks used in pro racing—at a more affordable price. Synchro blocks provide the optimal ratio between line size, sheave diameter and the interface between rope and sheave. This new range of blocks transforms performance, not only by improving efficiency, but also speed and handling.

Snap Shackle, Fits Size 60mm, 19mm Opening Eye ID, Replaces 5mm Pin Dia., 1,760lb. SWL from LEWMAR
Replaces the standard shackle fitted to all blocks Will also fit all Lewmar Ocean blocks and most other blocks of similar size .

All-Purpose Block, Double, 2,200lb. SWL, 8.9oz. from RONSTAN
Strong, durable and economical blocks with a unique captive lock universal head fitting that allows the blocks to be fixed in either of two planes, or to swivel freely. White UV-stabilized acetal sheaves run on low-fiction, very low-maintenance solid bearings. Loads are transferred directly from the sheave axle to the head post by the one-piece 316 stainless steel load straps. Hi-load (Model 160932) is wire rope-compatible. Sheave: UV stabilized Acetal. Bearings: Low-friction plain bearings.

All-Purpose Block, Double/Becket, 2,200lb. SWL, 9.5oz. from RONSTAN
Strong, durable and economical blocks with a unique captive lock universal head fitting that allows the blocks to be fixed in either of two planes, or to swivel freely. White UV-stabilized acetal sheaves run on low-fiction, very low-maintenance solid bearings. Loads are transferred directly from the sheave axle to the head post by the one-piece 316 stainless steel load straps. Hi-load (Model 160932) is wire rope-compatible. Sheave: UV stabilized Acetal. Bearings: Low-friction plain bearings.

All-Purpose Block, Single, 1,650lb. SWL, 4.1oz. from RONSTAN
Strong, durable and economical blocks with a unique captive lock universal head fitting that allows the blocks to be fixed in either of two planes, or to swivel freely. White UV-stabilized acetal sheaves run on low-fiction, very low-maintenance solid bearings. Loads are transferred directly from the sheave axle to the head post by the one-piece 316 stainless steel load straps. Hi-load (Model 160932) is wire rope-compatible. Sheave: UV stabilized Acetal. Bearings: Low-friction plain bearings.

Large Dinghy Snatch Block, 9/16" Line Dia., 40mm Sheave Dia., 1300 SWL from HOLT ALLEN
Glass-filled nylon cheeks with 316 stainless straps increase working efficiency more than 50% with minimal weight increase. Stainless ball bearings in a polypropylene cassette. For spinnaker sheet, jib sheet turning blocks, etc. Cheek Material/Finish: Glass filled nylon. Ball Bearing: Stainless ball bearings. Opening: Hinged cheek/axle.

3" Block, Heavy-Duty Single, 750lb. SWL, 8.0oz. from HARKEN
Designed for small to medium-sized offshore boats, catamarans, etc. Large diameter sheaves reduce the friction caused by bending a line over a small sheave. All feature three-way head system and removable beckets. Sheave: Hardkote anodized Teflon-impregnated aluminum. Ball Bearings: Delrin ball bearings/Hi-Load wire blocks: Torlon ball bearings. Sheave Size: 3" (76mm). Line Diameter: 7/16" max. Cheek Material/Finish: Plastic/Stainless steel.

All-Purpose Block, Fiddle, 882lb. SWL, 3.2oz. from RONSTAN
Much stronger than other same-size blocks and much more compact than other blocks handling the same loads. “Smart” features include a unique captive lock universal head fitting and an adjustable cam arm. The ball bearing blocks feature Ronstan’s two-stage bearing system, which has exceptional low-friction performance and very high maximum working loads. For dinghies and keelboats to 26'. Bearings: Two-stage acetal ball bearing system or plain bearing. Sheave Size: 1-9/16" (40mm). ).

Spring-Loaded Block, Fits 1" Track Size, 2" Sheave Dia., 7/16" Line Dia., Aluminum Cheeks, 1,750lb. SWL from SCHAEFER
Captive liners allow blocks to glide along the track virtually without friction, yet they handle up to 3,500lb. of tension or compression load. They swivel 45° to each side of the track and their patented design prevents blocks from hitting the deck when sheets are flogging. For sails up to 715 sq. ft. and boats to 38’. Bearings: Plain bearing. Shackle/Strap Type: 45° stand-up-spring shackle on T-Track slider. Configuration: Genoa lead block, 1" or 1-1/4" T-Track.

40mm Carbo Lead Block Assembly, Fits 1" (25mm) Stanchions, 485lb. SWL, 3.7oz. from HARKEN
These stanchion lead blocks have free-rolling ball bearings to lead line aft for safe furling from the cockpit. Use the 7401 40mm block on the bow pulpit as an inboard lead. The 7402 features a ratchet to control spooling when unfurling. The 7401 and 7402 have ball and socket bases to align blocks for smooth leads aft. The 7403 has a 29mm sheave and allows the furling line to travel outboard of the stanchion to keep the side deck clear. Mounts to stanchion with a four-screw clamp.

Bullet Block, Double, 400lb. SWL, 2.5oz. from HARKEN
Available in a wide range of designs, bullet blocks are the foundation of the Harken line, and are adaptable to almost all control line applications. Ideal for cunninghams, vangs, outhauls, traveler controls, spinnaker controls, barberhaulers, etc. Where applicable, blocks use #10 fasteners. Sheave: Delrin® . Ball Bearings: Delrin® . Sheave Size: 1 1/8" (29mm) . Line Dia: 5/16" max. . Cheek Material/Finish: Plastic with stainless strap . Cleat: 094, 095, 291- 423 Carbo-Cam® .

Bullet Block, Cheek, 300lb. SWL, 1.3oz. from HARKEN
Available in a wide range of designs, bullet blocks are the foundation of the Harken line, and are adaptable to almost all control line applications. Ideal for cunninghams, vangs, outhauls, traveler controls, spinnaker controls, barberhaulers, etc. Where applicable, blocks use #10 fasteners. Sheave: Delrin® . Ball Bearings: Delrin® . Sheave Size: 1 1/8" (29mm) . Line Dia: 5/16" max. . Cheek Material/Finish: Plastic with stainless strap . Cleat: 094, 095, 291- 423 Carbo-Cam® .

57mm Carbo Ratchet Block, Ratchet, 500lb. SWL, 3.0oz. from HARKEN
Control loaded lines with ease Lightweight Carbo Ratchets are available in 40mm, 57mm, and 75mm sizes. The 40mm blocks are perfect for jibsheets and spinnakers on small dinghies where size and weight are critical. 57mm and 75mm sizes have many configurations to fit jibsheets, spinnakers, and mainsheet systems on boats ranging from dinghies to large sportboats. The Cheek Block is also switch-controlled. The 40mm cam-arm versions work in ratchet mode only. Sheave Size: 1-9/16" (40mm).

Micro Block, Double, 350lb. SWL, 1.5oz. from HARKEN
Extremely lightweight, free running blocks. Designed for any number of uses on dinghies and for lightly-loaded control lines on boats of all sizes (inside masts and booms, lead car returns, tackle, etc. ). Where applicable, blocks use #10 fasteners. Sheave: Delrin® . Ball Bearings: Delrin® . Sheave Size 7/8" (22mm) . Line Dia: 1/4" max. . Cheek Material/Finish: Polished 316 stainless . Shackle/Strap Type: Fixed loop, loop with shackle .