Prime-Line D 1515 Prime-Line Concave Edge Sliding Door Assembly, 1-1/4 in Diameter X 5/16 in W, 1 Roller, 1-1/4" Product Description This sliding glass door roller assembly is constructed from steel. It features a 1-1/4 in. ball bearing roller with an adjustable steel housing. This roller assembly is used by Christian Porter, Full view and other glass door manufacturers. From the Manufacturer This sliding glass door roller assembly is constructed from steel. It features a 1-1/4 in. ball bearing roller with an adjustable steel housing. This roller assembly is used by Christian Porter, Full view and other glass door manufacturers. Features Used by Christian Porter, Fullview and a variety of other patio door manufacturers When the corner screw passes through the F-tab the assembly is captured by the side stile and bottom rail as the screw draws the two sides together 1-1/4 in. diameter ball bearing roller Stamped steel housing and steel roller Rear adjustment screw Allows the door to roll smoothly USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.