This GEAR is for a chamberlin,liftmaster or sears craftsman. belt drive. Removed from a FORMULA I model that uses the old wide cog BELT pulley(9cogs & 9spaces) #144C0050 model, it includes the nuts bolts to assemble. This item is used it has been cleaned and checked for usability and wear. It is in excellent condition. stk#(603)A10,B4
