Stainless Fiddle Block with UC Sheave 10-45-UC10 Series Fiddle Block with Stainless Steel cheeks and Aluminum "universal circuit" ball bearing sheaves. Works with 10 55 uc for a powerful 4: 1 system. Aluminum sheaves run on Delrin(tm) ball bearings for a very strong yet low friction sheave. Unique single top sheave and two in line sheaves spread the load reducing friction and chafe. Stainless Steel D shackle run on a swivel head that may be locked in plate to avoid line twist. Bolted construction
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