C.R. LAURENCE G3048 CRL 5/8" Steel Sliding Window Roller . This CRL Window Roller Assembly has a 5/8 inch (15.9 millimeter) wide nylon housing with a snap-in design. The center grooved steel ball bearing roller is 5/8 inch (15.9 millimeter) O.D. by 1/4 inch (6.4 millimeter) wide..
