HARKEN 75mm Stainless Steel Mastcollar ESP Block, 6073 Block Size_125 mm They are designed for any

They are designed for any ideal number of uses on sailboards

the soft resilient cheeks reduce clatter and protect gelcoat while the snap shackle attachment provides quick and easy attachment with optional trunnion articulation

Anodized aluminum cheeks and stainless steel slider allows for effortless running

Low-profile

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

HARKEN 75mm Stainless Steel Mastcollar ESP Block, 6073 Block Size_125 mm They are designed for anyCruising 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.