Description:

Used to repair patio sliding doors with missing, damaged or malfunctioning roller assemblies. Concaved (grooved) edge wheels designed to glide on a single raised aluminum or steel track. Adjustable steel housing with a 1-1/2 inch plastic wheel and steel ball bearings. See manufacturer model number D 1579-1 stainless steel repair cap for damaged tracks. Used by Northrup aluminum glass doors and similar styled patio sliding doors.