RiaYer Ball Bearing Single Block Pulley, 35mm Sheave with Lockable Swivel and Becket, 316 Stainless Steel Marine Hardware for Dinghy Vang, Kayak Anchor Trolley and Tent Tensioner, Up to 8mm Line

["【Precision ball bearing system】 Features high performance polymer ball bearings that deliver instant response under dynamic tension. This reduces pulling effort significantly, making it ideal for fast action adjustments and high frequency setups.","【Rustproof marine construction】 Built to survive harsh environments. Features a core load bearing structure of 316 stainless steel, wrapped in lightweight UV resistant pa66 nylon cheeks that will not rust, corrode, or degrade in sunlight.","【Dual mode swivel and becket】 The top connection is a rotating shackle to prevent tangles, which can be locked at fixed angles using a hex screw. The hollow bottom pin provides a reliable anchor point for building mechanical advantage systems.","【Compact with high strength】 Despite its highly compact profile, it handles up to 8mm ropes. It delivers a reliable safe working load of 250kg or 550 lbs and a breaking load of 600kg or 1320 lbs, offering unparalleled performance.","【Multi scenario applications】 Ideal for marine control lines, outhauls, and water sports trolleys. It also excels in outdoor activities like lightweight camping shelter setups, hammock suspension, and small garage hoist lifting systems."]