Harken 57mm Aluminum Low-Load Swivel Block
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Harken 57mm Aluminum Low-Load Swivel Block is available to special order.
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Harken 57mm Aluminum Low-Load Swivel Block
Description
Description
Designed for smooth and efficient sailing, the Harken 57mm Aluminum Low-Load Swivel Block delivers exceptional performance for sail controls requiring frequent adjustments. Ideal for mainsheet, runner, halyard, and spinnaker systems, this lightweight yet durable block ensures free-running efficiency with minimal friction. Featuring a center cage that keeps Torlon® roller bearings aligned, it reduces resistance and maximizes control. The swivel shackle allows for dynamic movement while locking in two directions to prevent unwanted twisting. Built with 316 stainless steel shackles and red isolators for easy identification, this low-load block is a reliable choice for performance-focused sailors.
Key Features:
Size: 57mm sheave diameter for smooth line movement
Material: Lightweight aluminum with stainless steel components
Bearing System: Torlon® roller bearings for reduced friction
Swivel Design: Locks in two directions or rotates freely
Low-Load Block: Features red isolators for easy identification
Shackle Material: 316 stainless steel for corrosion resistance
Ideal Use: Perfect for mainsheets, runners, halyards, and spinnakers
Durability: Built for high-performance sailing and frequent adjustments
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