Roller Bearing, Steel, Silver, Galvanized Finish, Shaft Length 4-3/8 in, Length (In.) 4 1/8 in, Height (In.) 1 13/16 in, Width (In.) 1 13/16 in, Depth (In.) 1 13/16 in, Outside Dia. 1 7/8 in, Wheel Diameter 1 3/4 in, Max. Wheel Dia. (In.) 1 7/8 in, Roller Width/Dia. (In.) No Roller, Surface Mounting, Mounting Hole Size (In.) 15/32 in, Steel Bearings, Number of Wheels 1, Steel, Hardware Not Included, Requires Hardware, For Use With Sectional Garage Door, 1 Pair