| Compatible with all Liftmaster Screw Drive and Low Profile Screw Drive operators (1995-current). |
| Compatible with Chamberlain models 4600, 4620, 4640, 9902, PD420, PD460-2, 9950 |
| Compatible with Liftmaster models 1000SD, 2000SD, 1000SDR, 2000SDR, 2110, 2220 |
| Same as Part number 25A18 |
| Replaces sprocket coupler on Screw Drive rail assemblies |
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