This bahco s17sp s17sp socket set of 16 features sockets made from high performance alloy steel with a matt finish they are supplied on a plastic rail holder for easy storage manufactured to iso 1174 and din 3120 contains the following 16 x 12in drive hex metric sockets 10 11 12 13 14 15 16 17 18 19 21 22 24 27 30 and 32mm 1 x 12in drive ratchet