Pulley Strap and Bolt, Material Steel, Color Silver, Steel Finish, Cable Size 3/16 In., Length (In.) 3, Height (In.) 1, Width (In.) 3, Depth (In.) 3, Outside Dia. 3 In., Wheel Diameter 3 In., Max. Wheel Dia. (In.) 3 In., Roller Width/Dia. (In.) 3, Mounting Surface, Steel Bearings, Number of Wheels 0, Construction Galvanized Steel, Hardware Included, Requires Hardware, For Use With Sectional Garage Door, Package Quantity 1, Pair 1.