Product Description Harken Black Magic Footblock Use 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 Length (mm) 111 mm Length (in) 4 3/8 in Height (mm) 57 mm Height (in) 2 1/4 in Weight (g) 490 g Weight (oz) 17.28 oz Fasteners (mm) 8 FH mm Fasteners (in) 5/16 FH in Maximum working load (kg) 1572 kg Maximum working load (lb) 3465 lb Breaking load (kg) 3143 kg Breaking load (lb) 6930 lb Sheave Ø (mm) 75 mm Sheave Ø (in) 2 15/16 in Maximum line Ø (mm) 14 mm Maximum line Ø (in) 9/16 in Number of fasteners 4 A (mm) 11.5 mm A (in) 15/32 in B (mm) 28.5 mm B (in) 1 1/8 in C (mm) 70.5 mm C (in) 2 3/4 in D (mm) 21 mm D (in) 13/16 in E (mm) 77 mm E (in) 3 in F (mm) 110 mm F (in) 4 5/16 in G (mm) 17 mm G (in) 21/32 in
