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ClearStart™ watches and timers are water resistant rated at 5ATM and highly shock resistant
Sailboats 9 m and above (30 ft +)
Lead Car runs on Polyethylene liners to reduce friction
Schaefer 2 3/8" Delrin Sheave
Schaefer Aluminum Fiddle Block w/Swivel Shackle & Becket, Sheave Dia. 1 7/16" SCHAEFER OVER THE TOP BLOCKS ClearStart™ watches and timers areProduct Description Schaefer Aluminum Fiddle Block w Swivel Shackle & Becket, Sheave Dia. 1 7 16" Fiddle block with swivel shackle and becket. Works with 303 45 for a 4: 1 purchase. Delrin(tm) sheaves ensure low friction and high safe working loads. For boats to 25', control lines on boats to 30'. Specifications: Sheave Dia.: 1 7 16 in. Thickness: 3 4 in. (19 mm) Width: 1 7 8 in. (48 mm) Length: 6 7 32 in. (158 mm) SWL: 1000 lbs (410 kg) Weight: 4.