Harken 75mm Aluminum Mast Collar ESP Block

Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and construction.

Sheaves feature sleeve bearings to handle high static loads and are ideal for halyards or limited purchase systems on cruising boats.

Specifications

• Sheave Ø (mm): 75 mm
• Sheave Ø (in): 3 in
• Length (mm): 117 mm
• Length (in): 4 5/8 in
• Weight (g): 221 g
• Weight (oz): 7.8 oz
• Clevis pin Ø (mm): 8 mm
• Clevis pin Ø (in): 5/16 in
• Maximum line Ø (mm): 19 mm
• Maximum line Ø (in): 3/4 in
• Maximum working load (kg): 1361 kg
• Maximum working load (lb): 3000 lb
• Breaking load (kg): 2721 kg
• Breaking load (lb): 6000 lb