Prime-Line Products D 1603 Sliding Door Roller Assembly, 1-1/4-Inch Steel Ball Bearing 1-1/4in. O.D. Steel ball bearing center grooved roller Housing dimensions: W: 11/16in. L: 2-5/16in. H: 1-1/8in. Overall Thickness, 15/16in. Adjustable die cast housing assembly Fits Crossly and other glass door manufacturers