7075 Aluminum machined J/22 Gooseneck with pressed in Oil-lite bronze bushings, and 18-8 Stainless steel shoulder bolts, for an indestructible lifetime warrantee. The bronze bushings ensure that the bolt hole never elongates or wears - and the supplied shoulder bolts distribute the wear, so this Gooseneck will never wear out or break! Includes Hex keys included for the bolts, and Nylon locking stainless steel nuts. Lifetime Warrantee. Class Approved.