These keyless bushings consist of a stainless steel metal bellow joined together to Al or Steel hubs provide a complete backlash free transmission between 2 shafts, with various other advantages. Designed to transmit a torque range of 0.4 Nm to 5,000 Nm with bore diameters from 3mm to 85 mm in divergent models, including plain borekeyway, side and top clamping, internal and external conical hubs.