Slide-Co 161999 Closet Door Roller, Back, 9/16-Inch Offset, 7/8-Inch Concave Wheel,(Pack of 2) Wardrobe Door Back Roller Center Groove 7/8" OD Nylon Wheel Adjustable Steel Bracket 7/8in. O.D. center groove nylon wheel 9/16in. Offset adjustable steel bracket Fits old style Kenna Frame Zinc Plated Finish