Prime-Line D 1683 Prime-Line Products D 1683 Sliding Door Roller Assembly With 1-1 1.5 Inch Diameter Roller Replacement unit for Highlight doors Find pricing and availability for the Prime-Line D 1683 Roller Assembly, 1-1/2 in Dia Roller, 5/16 in W Roller, Steel, 1-Roller Adjustable steel housing assembly , 1-1/2in. This sliding glass door roller assembly is constructed from steel and features a height-adjustable housing. The concaved (grooved) edge wheels installed in these roller assemblies are constructed of plastic and include steel ball bearings for smooth and long-lasting operation This patio door roller is constructed from nylon. Bathroom Replacement Part 4 Pcs M 6053 Frameless Shower Door Rollers Top Bracket Roller Assembly 3/4 In Ro Frameless Shower Door Roller Assembly Diameter Nylon Ball Bearing Roller