ARP 2007605 Valve Cover Studs With Hex Nuts, Chrome Moly Steel With Black Oxide Finish, Package Of 16, For Select Cast Aluminum Covers Professional quality studs help ensure proper sealing of valve covers Special bullet nose accurately guides nuts into position Studs are size 1/4-20 with an overall length of 1.500 Set of 16 studs comes complete with washers and traditional hex style flanged lock nuts Manufactured from black oxide finished chrome moly steel