Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. Sheave diameter: 1 1/8" (29 mm) Maximum line diameter: 5/16" (8 mm) Fasteners: 5 FH mm (#10 FH inch) Mounting hole spacing: 2 1/4" (57 mm) Cutout: 3/4" x 1 3/4" (19 mm x 44 mm) Maximum working load: 300 lb (136 kg) Breaking load: 2000 lb (907 kg) Length: 3" (76 mm) Weight: 1.25 oz. (35 g)