Oem liftmaster chamberlain Genuine Screw Drive Coupler
- Compatible with all Liftmaster Screw Drive and Low Profile Screw Drive operators (1995-current).
- Replaces sprocket coupler on screw drive rail assemblies..
- Compatible with all Liftmaster Screw Drive and Low Profile Screw Drive operators (1995-current), models 1000SD, 2000SD, 1000SDR, 2000SDR, 2110, 2220, and models 4600, 4620, 4640, 9902, PD420, PD460.