Stainless steel construction Black oxide finish Allen wrench included 2 adaptors included Includes 2 bases Easy installation Fits all standard push button swivel bases Manufactured in the United StatesThe Grove Tec Multi-Adaptor Studs are perfect for the demanding operator needing more than a sling swivel. This multi-adaptor stud is designed for easy installation to give the operator options for bipod, accessories, or sling mounting. The kit includes an Allen wrench and two adaptor studs that snap into the two stainless steel bases for a standard stud function.The adaptor studs are manufactured out of steel and will fit all standard push button Mfg: Grovtec Us SPECS: All steel construction, Black oxide finish, 2 adaptor studs, Stainless steel bases, Allen wrench, Accepts all swivel types, Fits all standard push button swivel bases, Adaptor stud acts as a standard stud, Easy installation, Made for tactical rifles.