Prime-Line 1-1/2 in. D X 0.31 in. L Steel Roller Assembly 1 pk

This is a plain back patio door roller assembly with a 1-1/2 in. concave steel ball bearing roller. It is rear adjusting with a 1/4-20 threaded mounting hole on the back end and an optional use #10-32 threaded hole on top. Used by Fleetwood and a variety of other sliding patio door manufacturers.