M9208-600 Johnson Controls Coupler Kit

Large Shaft Coupler Kit (with Locking Clip) for Mounting M9208 Series Electric Spring Return Actuators on dampers with round shafts from 1/2 to 3/4 in. (12 to 19 mm) or square shafts from 3/8 to 9/16 in. (10 to 14 mm) (quantity 1)