Harken 57mm Stainless Steel ESP Footblock EXTERIOR This 4 step dock ladder DOCK LADDERS This 4 step dock ladder is designed for durability and convenience Breaking load (kg): 1700 kg Sheaves feature sleeve bearings to handle high static loads and are ideal for halyards or limited purchase systems on cruising boats Sheave Ø (mm): 57 mm Sheave Ø (in): 2 1 4 in Length (mm): 95 mm Length (in): 3 3 4 in Weight (g): 198 g Weight (oz): 7 oz Maximum line Ø (mm): 16 mm Maximum line Ø (in): 5 8 in Maximum working load (kg): 1000 kg Maximum working load (lb): 2205 lb Breaking load (kg): 2000 kg Breaking load (lb): 4409 lb Fasteners (mm): 10 FH mm Fasteners (in): 3 8 FH in B (mm): 55 mm B (in): 2 5 32 in C (mm): 57 mm C (in): 2 1 4 in