The TOC Swivel Bases are made of carbon steel or stainless steel (not nickel-plated). The bases accept any standard U.S. detachable swivel perfect for replacing the non-detachable swivel bases and increasing the value of any firearm.

? Accepts All Standard Usa Detachable Swivels
? Machined Construction Custom Look All Steel Black Oxide Or 100% Stainless Steel
? GUARANTEED FOREVER