Product Description Harken 100mm Aluminum Foot BlockUse footblocks to redirect lines on the deck. Footblocks with lockoffs temporarily secure sheets. Either metric or imperial flathead fasteners may be used for mounting and are not exposed. Sideplates and sheaves Hard Lube-anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon roller bearings separated and parallel to reduce friction. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C. Specifications: Sheave Ø (mm) 100 mm Sheave Ø (in) 3 15/16 in Length (mm) 143 mm Length (in) 5 5/8 in Weight (g) 555 g Weight (oz) 19.57 oz Maximum line Ø (mm) 16 mm Maximum line Ø (in) 5/8 in Fasteners (mm) 10 FH mm Fasteners (in) 3/8 FH in Maximum working load (kg) 3402 kg Maximum working load (lb) 7500 lb Breaking load (kg) 6804 kg Breaking load (lb) 15000 lb Height (mm) 33 mm Height (in) 1 5/16 in Number of fasteners 4 A (mm) 14.5 mm A (in) 9/16 in B (mm) 37.5 mm B (in) 1 15/32 in C (mm) 92.5 mm C (in) 3 21/32 in D (mm) 28 mm D (in) 1 3/32 in E (mm) 100 mm E (in) 3 15/16 in F (mm) 143 mm F (in) 5 5/8 in G (mm) 23 mm G (in) 29/32 in