Profile: Twin Spring Coupling is a new hybrid coupling, providing the torque and flexibility of a universal joint without the constant greasing and bearing replacements. Combine that with the torsional rigidity of a servo based coupling (beam, bellows, jaw coupling) its time to replace your old couplers One piece design so no broken hubs or yokes Dual spring design absorbs vibration No bearings to grease or replace High torque and flexibility (up to 20 degrees) Industry standard splines and hub configurations High torsional rigidity to run at high speeds.