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The cylinder is contained inside the bladder to protect against corrosion
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a hardcoat-anodized aluminum sheave
With a maximum line diameter of 12mm and a working load of 272kg (600lbs)
5dB gain and award-winning quality construction
Harken 57mm Double Ratchamatic Block Swivel Boat GP14 The cylinder is contained insideThe Carbo Ratchamatic is a load sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light air modes is seamless. Use the 2634 with a 402 or 403 swivel arm for a versatile two speed mainsheet system.