1.The Coupler Assembly Is Designed To Keep The Screw Drive And Motor From Wear And Tear. Garage Door Opener Coupler Is Used To Replace The Screw Drive Coupler Which May Get Fatigued Over Time With The Weight Of Your Garage Door.2.Garage Door Opener Coupler Compatible With Screw Drive And Low Profile Screw Drive Operators (1995-Current) Compatible With Models 1000Sd 2000Sd 1000Sdr 2000Sdr 2110 2220 Models 4600 4620 4640 9902 Pd420 Pd460-2 9950 139.5399211 139.53991Srt 139.53992Srt 41A5389-1D 41A5389D 102215200018 And More.3.Easy Fix Rather Than Buying New Garage Door Opener Saving Your Time And Energy.
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