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Genoa sheet systems on boats to 25m (82ft)
Lewmar 30mm Single Swivel Head Control Block
10 UNC 2 BA
Weight - 3 oz
a hangar loop and drainage seams
Schaefer 10-05-UC S.S. Single Block w/ UC Sheave Ronstan Series 75 Genoa sheet systems on boatsProduct Description Schaefer 10 05 UC S. S. Single Block w UC Sheave 10 Series Single Block with Stainless Steel cheeks and Aluminum "universal circuit" ball bearing sheave. Aluminum sheave run on Delrin(tm) ball bearings for a very strong yet low friction sheave. Stainless Steel D shackle run on a swivel head that may be locked in plate to avoid line twist. Bolted construction allows for easy maintenance. Specifications: Sheave Dia.: 3 1 4 in. (83