Are you having trouble sliding your screen door open or closed? Have you checked your rollers/roller assemblies? Don’t replace the entire door. For a fraction of the cost of a new door, replace those worn-out rollers. This is a stainless steel housing and spring-loaded arm roller assembly, with a 1-1/4 Inch stainless steel ball bearing roller attached. Used by Bay-Mills as well as a variety of other patio door manufacturers. The spring-loaded roller arm is adjusted by the adjustment sleeve and screw on top. Order yours today and have your door slide like new.