300 Series Fairlead Block, Fixed Style, 2-7/32" x 3/4" from SCHAEFER
Same as the Schaefer 200 Series fairlead blocks, but with twice the working load. Use #10 fasteners. Configuration: Lead block. Sheave: UV-stabilized white Delrin®. Ball Bearings: Delrin. Sheave Size: 1-7/16" (37mm). Line Diameter: 7/16". Cheek Material/Finish: Polished stainless.

Furling Lead Block from RONSTAN
A sleek, snag-free way to lead your furler's lines back to the cockpit. Clamps around the 7/8" or 1" stanchion tubing, so you don't have to drill any holes.

Exit Box Style, 7/8" Sheave Dia., 1/8" Max. Line, 350lb. SWL, 1.1oz. from RONSTAN
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Hi-Load Ti-Lite Car, Torlon Bearings, 850lb. SWL from HARKEN
These lightweight, solid aluminum and compact captive ball (CB) travelers are built to handle very high loads. Captive ball bearings let you roll the cars on and off the track without using a ball loader. Boat Size: Dinghies, multihulls, to small offshore boats. Material: One-piece solid aluminum . Shackle: Pivoting toggle models—fasten control blocks directly to post without needing a shackle. Sheave: Fixed sheave models—mainsheet loads 40° or less from vertical.

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.

Series 60 Orbit Block, Single Light-Load, 2-3/8" Sheave Size, 1,710lb. SWL, 4.7oz. from RONSTAN
These exceptionally strong blocks feature the performance Orbit sheave with captive Acetal ball bearings for side thrust loads, eliminating the need for side retainer plates. The 75mm webbing block (RF79107) can be used where swivel head and shackle attachment is not required to achieve further weight savings. Sheave Size: 2-3/8" (60mm) or 3" (75mm). Line Diameter: Series 60: 1/2" (12mm), Series 75: 9/16" (14mm). Cheek Material/Finish: Anodized aluminum.

All-Purpose Block, Single with Becket, Loop Head, 880lb. SWL, 2.2oz. 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). ).

Corrosion Block, 12oz. Aerosol from LEAR CHEMICAL
Stops corrosion on all metalsThis anti-corrosion lubricant/penetrant stops or prevents corrosion on all metals. Its hydrophobic chemistry acts like an "off switch" to prevent dissimilar metal corrosion. Leaves a non-toxic, non-greasy, clean, clear protective film that blocks corrosion in a wide variety of applications, including marine electronics, batteries, circuit panels, standing rigging, fishing gear and inboard or outboard motors. 12oz. aerosol or 32oz.

Ratchet Orbit Block, Cheek, Counter-Clockwise, 550lb. SWL, 2.7oz. from RONSTAN
Practical Sailor's Ratchet Block Click-Off rated Ronstan's Orbit block "Overall, the most impressive with its grip, versatility, and lightweight design. It can be set at a 0 or 90 degree orientation, provides stress-free articulation without allowing the block to over-rotate, and is locked in place with a security clip that doesn’t require tools to fit. The Dyneema link is also more compatible with carbon, Dyneema and webbing connection points than steel loop tops or shackles.

Corrosion Block, 32oz. with Refill Sprayer from LEAR CHEMICAL
Stops corrosion on all metalsThis anti-corrosion lubricant/penetrant stops or prevents corrosion on all metals. Its hydrophobic chemistry acts like an "off switch" to prevent dissimilar metal corrosion. Leaves a non-toxic, non-greasy, clean, clear protective film that blocks corrosion in a wide variety of applications, including marine electronics, batteries, circuit panels, standing rigging, fishing gear and inboard or outboard motors. 12oz. aerosol or 32oz.

29mm Carbo Clew Block Assembly from HARKEN
From the folks who invented ball bearing blocks, this line of blocks boasts an excellent strength-to-weight ratio. 29mm doubles and triples feature a U-lock to hold the swivel in the front or side position, or allow it to spin freely. Use the 40mm blocks for jib and mainsheet systems on high-performance dinghies, and for high-load control lines on small keelboats. The 57mm blocks have an enormous working range that makes them ideal for main and jib sheets, spinnaker halyards and control lines.

Delrin Sheave, 1/2" Max. Line Dia., 1-7/16" OD, 3/8" ID, 5/8" Width from SCHAEFER
Schaefer sheaves are designed to be compatible with Schaefer products, and are not intended for use in other manufacturer's blocks. Delrin sheaves are injection molded with UV inhibitors and monitored molding cycles for a stronger product.

V. 1-7/8"L x 5/8"W Eye Strap, 1/2" Fairlead Width, 1-3/8" Hole Centers, Two #10 RHMS Fasteners from RONSTAN
Eye straps are convenient for lashing points and attaching control line leads or blocks.

Series 60 Ratchet Block, Head Post Locking Kit from RONSTAN
Ser60 Rcht Blck, Lck Kt|SER60 RCHT BLCK LCK KT.

Midrange Hexaratchet Ratchet Block, Single, 1,800lb. SWL, 14oz. from HARKEN
Stronger versions of the Hexaratchet II+2 with 8:1 holding power. Beefier posts and wraparound straps handle higher working loads. Sheave: Teflon-impregnated Hardkote anodized aluminum. Bearings: Delrin. Sheave Size: 3" (76mm). Line Diameter: 9/16" max. Cheek Material/Finish: Plastic with wrap-around stainless straps. Shackle/Strap Type: Heavy-duty forged swivel with three-way head; locks or rotates. Cleat: 1556 and 1566: 280 Cam-Matic.