Barton Marine Ratchet Block - 55mm is a compact, high‑performance block designed for mainsheet systems and spinnaker sheets on small craft up to 30 ft. It blends precise control under load with smooth, progressive easing to help you trim with confidence.
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Size: 55 mm ratchet block suitable for mainsheets and spinnaker sheets on dinghies, keelboats, and small yachts up to 30 ft
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Locking lever: Stainless steel lever can lock the swivel head for added control during trimming or easing under load
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Body material: High-density nylon with glass fiber reinforcement and UV protection
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Internal hardware: Marine-grade 316 stainless steel components
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Sheave: 12-faced aluminum sheave with gunmetal silver anodizing for durability and a contemporary look
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Maximum rope diameter: 3/8" (10 mm)
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Weight: 4.8 oz (135 g)
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Load ratings: Safe Working Load 661 lb (300 kg); Breaking Load 2,646 lb (1,200 kg)
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Assembly: Sold as an individual block, ready to install in mainsheet or spinnaker line setups
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Brand / Part: Barton Marine • Part No: 90500 • UPC: 5035088085286
Designed to keep lines secure under load while allowing smooth, progressive easing when you need it, the Ratchet Block features a stainless steel locking lever for precise control during trims. Its high‑density nylon body, marine‑grade stainless internals, and gunmetal anodized aluminum sheave are built to endure harsh marine conditions, delivering reliable performance on boats up to 30 ft without adding unnecessary weight.
