Roller Assembly, Roller, Steel, Gray, Unfinished Finish, Length (In.) 3 3/8 in, Height (In.) 3/4 in, Width (In.) 1 5/8 in, Outside Dia. 1 1/4 in, Max. Wheel Dia. (In.) 1 1/4 in, Roller Width/Dia. (In.) 1-1/4 in, Door Mounting, Steel Bearings, Number of Wheels 0, Steel, Hardware Not Included, Requires Hardware, For Use With Patio Glass Door