Harken Halyard Restrainers -
944 and 945 Halyard Restrainers have removable Hardkote-anodized sheaves that are grooved for both wire and rope halyards. Sheaves spin on Teflon® impregnated bearings. Use only when headstay is close to halyard sheave. Used to adjust the lead angle from the masthead sheave, if necessary. 3/16" fasteners.