HARKEN 75mm Stainless Steel Mastcollar ESP Block, 6073 Block Size_125 mm and a D-ring on each

and a D-ring on each side to attach heavy tools

They are designed for any ideal number of uses on sailboards

Anodized aluminum cheeks and stainless steel slider allows for effortless running

Weight savings on large offshore boats can be as much as 200 lbs

and lightly loaded control lines on boats of all sizes

HARKEN 75mm Stainless Steel Mastcollar ESP Block, 6073 Block Size_125 mm and a D-ring on eachCruising 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. ESP stands for Elegant Simple Products, which is a line of hardware that complements other existing blocks in looks but is simpler in design and construction.