Torsion Spring Winding Rods, Steel, Silver, Steel Finish, Shaft Length 16 in, Length (In.) 16 in, Height (In.) 16 in, Width (In.) 1/2 in, Depth (In.) 1/2 in, Wheel Diameter 1/2 in, Roller Width/Dia. (In.) No Roller, Surface Mounting, Number of Wheels 0, Hard Drawn Wire, Hardware Not Included, Requires Hardware, For Use With Sectional Garage Door, 1 Pair