Schaefer Single Aluminum Block w/Swivel Shackle and Becket, Sheave Dia. 1 7/16" Accessories JY 15 Forespar 4" TS Automatic Socket

Forespar 4" TS Automatic Socket End

and race proven by America's Cup Teams

One "wrap" around our "v" shaped base locks line in cleat for quick adjustments

Cut-Out Width (Flat/Flange) Y1 (in) - 17 3/16

C - 4 3/4 in

Schaefer Single Aluminum Block w/Swivel Shackle and Becket, Sheave Dia. 1 7/16" Accessories JY 15 Forespar 4" TS Automatic SocketProduct Description Schaefer Single Aluminum Block w Swivel Shackle and Becket, Sheave Dia. 1 7 16" Single Aluminum Block with Swivel Shackle and Becket. Aluminum Cheeks and Delrin Sheave provide a strong, durable block. 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 9 16 in. (40 mm) Length: 4 1 2 in. (114 mm) SWL: 1000 lbs (410 kg) Weight: 2. 8 oz. (79 g) Max Line: 7 16 in.