Barton Marine Ratchet Block - 55mm is a compact, high-performance block designed for mainsheet systems and spinnaker sheets on dinghies, keelboats, and small yachts up to 30 feet. This 55 mm ratchet block blends advanced engineering with contemporary design to deliver hands-on control when lines are under load, offering a balance between holding power and controlled easing.
The Ratchet Block features a stainless steel lever that can lock the swivel head when desired, giving you precise control during maneuvering and trimming. It’s engineered to keep lines secure under load while still allowing smooth, progressive easing when you need it most.
Built to endure harsh marine conditions, the Ratchet Block body is manufactured from a high-density nylon and glass fiber reinforced polymer with excellent UV protection. Internal components are marine-grade 316 stainless steel, and the 12-faced aluminum sheave is anodized in gunmetal silver for durability and a clean, modern look.
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Size and versatility: 55 mm ratchet block for mainsheets and spinnaker sheets on small craft up to 30 ft.
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Locking lever: Stainless steel lever can lock the swivel head for added control when trimming or easing under load.
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Low friction, high longevity: Engineered for smooth operation and long life in challenging marine environments.
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Materials you can trust: Body in high-density nylon with glass fiber reinforcement; 316 stainless steel internals; gunmetal anodized aluminum sheave.
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Technical performance: Safe Working Load 661 lb (300 kg); Breaking Load 2,646 lb (1,200 kg); Maximum Rope Diameter 3/8" (10 mm); Weight 4.8 oz (135 g).
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Assembly and use: Sold as an individual block, ready to install in your mainsheet or spinnaker line setups.
Manufacturer: Barton Marine • Part No: 90500 • UPC: 5035088085286
