Sealey 13 piece impact trx star security socket set 1 4 3 8 sq drive sealey premier ak5585 drop forged one piece chrome vanadium steel specially hardened and tempered security type head finished in black oxide for corrosion resistance supplied on two rails suitable for use with any impact tool sealey ak5585 impact trx star security socket set 13pc 1 4 and 3 8 sq drive