New Gerwah DKN100 Zero-Backlash Bellows Servo Motor Coupling 1/2" x 1/2" Bore
New Gerwah DKN100 Bellows Coupler. It is a model DKN100 flexible bellows coupling. This is a new (unused surplus) Gerwah coupling that was. Zero-Backlash Motor Coupling. Both ends of the coupler have a 12.7mm (1/2") dia.