Sealey 12 piece trx star socket bit set 1 4 sealey premier ak6213 drop forged chrome vanadium steel sockets and trx star bits knurled ring on sockets to assist gripping with oily fingers satin finish sockets give additional corrosion resistance supplied on socket rail sealey ak6213 trx star socket bit set 12pc 1 4 3 8 and 1 2 sq drive