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reducing noise and unwanted cycling
Single-handed operation for safe
Suitable for both 22mm(7/8") and 25mm(1") rail
REPLACES CUMMINS 3974456
HARKEN 57mm Aluminum Block — Swivel 30050 reducing noise and unwanted cyclingBlack Magic Air blocks are a top favourite of Big Boat performance racers and cruisers. These lightweight, free running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A centre cage keeps Torlon roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting. Torlon is a registered trademark of Solvay
US$ 145.00
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US$ 184.50
