Sheave (mm) 75 mm Sheave (in) 3 in Length (mm) 112 mm Length (in) 4 3/8 in Weight (g) 293 g Weight (oz) 10.3 oz Maximum line (mm) 19 mm Maximum line (in) 3/4 in Fasteners (mm) 8 FH mm Fasteners (in) 5/16 FH in Maximum working load (kg) 1587 kg Maximum working load (lb) 3500 lb Breaking load (lb) 7000 lb Breaking load (kg) 3175 kg A (mm) 13 mm A (in) 1/2 in B (mm) 61 mm B (in) 2 13/32 in Footnote If double stacked, upper block/organizer is two-thirds of listed MWL andbreaking load. D (mm) 15 mm D (in) 1 9/32 in E (mm) 75 mm E (in) 2 31/32 in F (mm) 111 mm F (in) 4 3/8 in