Harken ESP 100 mm Single Block with Swivel | Harken ESP 100 mm Single Block with Swivel | Aluminum sides.| With ball bearing for light loads and plain bearing| for heavy static loads.| Max. Working load 2,209 kg. | Breaking strength 4,418 kg.| 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.
