Specification Brand : Chicago Die Casting Label : Chicago Die Casting Manufacturer : Chicago Die Casting MaterialType : Zinc MetalType : Cast Iron Model : Zinc Die Cast NumberOfItems : 1 PackageDimensions_Weight : 0.64 PackageDimensions : L:4.80 X W:3.63 X H:1.25 PartNumber : 350A6 ProductGroup : BISS Basic ProductTypeName : PULLEYS Publisher : Chicago Die Casting Size : 3.5 SmallImage_Height : 55 SmallImage_URL : https://m.media-amazon.com/images/I/21Z-zCdM0dL._SL75_.jpg SmallImage_Width : 75 Studio : Chicago Die Casting Title : 3-1/2" with 5/8" bore, with Keyway, A-Groove, Chicago Die Cast Pulley, 100% Made in The USA! Weight : 0.6 WeightUnit : pounds