2 Pcs Garage Door Opener Sprocket Coupler Part 25C20 25A18
Dreyoo 2 Pcs Screw Drive Coupler Part Compatible with LiftMaster Chamberlain Gar. Universal Compatibility: compatible with Liftmaster models 1000SD, 2000SD, 1000SDR, 2000SDR, 2110, 2220, and Chamberlain models 4600, 4620, 4640, 9902, PD420, PD460-2, 9950, and more.