Bellows Flexible Coupling: MFB Setscrew Type Merits: - Constant Velocity - Zero Backlash - Bellows type flexible coupling - High Torsional Stiffness and High Response - Spring action bellows configuration absorbs parallel, angular and shaft end-play misalignments - Constant velocity even under misalignment - Identical clockwise and counter-clockwise rotational characteristics - Bellows available in stainless steel or phosphor bronze (Hub : Aluminum Alloy) - Finished products featuring two different end bore diameters available in stock