Sealey 16 piece hex socket bit set 1 4 3 8 sq drive sealey premier ak6219 forged chrome vanadium steel sockets with s2 steel hex bits sockets heat treated and chrome plated for resistance to corrosion knurled ring to assist gripping of socket with oily fingers supplied on socket rail sealey ak6219 hex socket bit set 1 4 and 3 8 sq drive 16pc