Schaefer Half Moon Mast Base Blocks
Schaefer Half-Moon Mast Base Blocks provide a strong and smooth option for leading your hayards and control lines to the sailboat cockpit. Choose from four different models, all featuring a heavy duty S.S. cage, polished and buffed to a mirror finish. Sheaves are machined aluminum and run on Schaefer's self-lubricating Nomex™/Teflon™ Bearing. UC models incorporate Delrin™ Ball Bearings for additional friction reduction.