The 10 tooth chain drive sprocket sits on the shaft of the motor unit to rotate the chain. Compatible with the chain drive rail models. The sprocket only included.
Use With Chain Drive Opener Models: PMX 700, PMX 1200, GPS 700 IC, GPS 1200 IC, PMX 300 IC/A, PMX 300 IC/B
Use With Chain Drive Opener Models: PMX 500 IC/A, PMX 500 IC/B, IC250, IC250/B
Usually Ships In One Business Day