Prime-Line 1 in. D X 0.25 in. L Nylon/Steel Roller Assembly 2 pk

This sliding screen door assembly is made from a steel housing and spring-loaded arm with the 1 in. steel high density polyethylene roller attached is used by Bay-Mills as well as a variety of other patio door manufacturers. The roller arm is spring-loaded and adjusted by the adjustment sleeve and screw on top.