The product is a 12" long, 5/8-11 inch threaded stainless steel rod made by All America Thread Products in the United States. The rod is fully threaded and made of R2 12 stainless steel, designed for industrial and business uses . When I cross referenced it it came up 416 stainless . It is plain finished and does not have a California Prop 65 Warning. This high-quality threaded rod is ideal for various fastening and hardware applications. Free shipping in the US