Specifications:We manufacture the Original Light Weight, Heavy-Duty flexible drive coupling. Magnaloy has been manufacturing their precision machined, magnesium alloy cast couplings for over 40 years. Today, Magnaloy offers many products in addition to Flexible Drive Couplings including, Pump/Motor Mounts, Cylinder Rod End Alignment Couplers, a complete line of Fluid Power Accessories and Hydraulic Manifolds & Manifolding Accessories. You may visit us on the Web.Magnaloy