Lewmar 105mm Shackle Post, In Line

Lewmar's 105mm Racing Runner Blocks run on an impregnated composite bearing with dual Delrin side thrust bearings to handle free running at low initial loads and ideal for high static loads. Their computer-designed cheeks with non-snag bails and alloy sheave profile are optimized for high-tech lines such as Spectra, Dyneema, and Vectran.

Runner and halyard blocks share the same head and sheave geometry.