Sealey 12 piece trx star socket bit set 1 4 3 8 1 2 sq drive 100mm sealey premier ak6221 drop forged chrome vanadium steel sockets with s2 steel trx star bits sockets heat treated and chrome plated for resistance to corrosion dual satin chrome finish with knurled ring to assist gripping with oily fingers supplied on socket rail sealey ak6221 trx star socket bit set 12pc 1 4 3 8 1 2 sq drive 100mm