Fiddle Ball Bearing Block with Aluminum Cheeks, Delrin Ball Bearing Sheaves, Cam Cleat, Becket. For boats to 34'. Use in combination with other 7 series blocks or 7 series adapters for a variety of applications. Works with 706-45 for a 4:1 purchase. Sheave Dia.: 2-3/8" (60mm) Thickness: 2-11/16" (68mm) Width: 4" (102mm) Length: 8-25/32" (223mm) SWL: 1700lb. (771kg) Weight: 1lb. 12oz. (595g) Max Line: 1/2" (13mm)