This 41A4813 T-RAIL CABLE PULLEY ONLY for the END MOUNT on a chamberlin,liftmaster or sears craftsman. chain drive model that uses a CHAIN & CABLE COMBINATION model it . The end mount connects the t-rail to the wall mount (sold separately). This item is used it has be cleaned and checked for useability and wear. It is in excellent condition. stk#(00666)A12,B1
