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The LiftMaster K72-13059 Output Shaft Kit Replacement for Commercial Garage Door Opener Model APT. This repair part comes with everything you need to get the output shaft working again! This includes the Output Shaft, Bearing, Roller Chain with Master Link, Limit Chain, Shim Washers, Roll Pins, Push Ring 3/4" and Sprockets (41B32 & 48B10).
