Roller Assembly, Sliding, Steel, Gray, Steel Plated Finish, Length (In.) 2 5/8 in, Height (In.) 1 in, Width (In.) 1 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 Door