Harken ESP distributor block in aluminum with | 4 pcs. 57 mm discs with ball bearings | ESP is a series of blocks that complement the other | Harken series in design and function, but are simple in design | and construction. | The disc has Carbon Delrin balls that take the light | load horizontally and laterally. At high static | loads, these are taken up by the large stainless | center plain bearing. | ESP are ideal as mast foot blocks and are available in | many variants.
