This a T-RAIL END MOUNT with idler pulley for a chamberlin,liftmaster or sears craftsman. chain drive model that uses a CHAIN &CABLE COMBINATION model it includes the nuts bolts to assemble. The end mount connects the t-rail to the wall mount (sold seperately). This item is used it has be cleaned and checked for useability and wear. It is in excellent condition. stk#(509)A15,b8
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