The bahco d dds20 impact socket set has 10 deep and 10 standard 12in drive impact sockets made from high performance alloy steel with a black finish to be used with machines for maximum safety use clamping springs comes in a case with a 2 component handle din 3129 iso 2725 sizes include 10 x 12in impact sockets 10 11 12 13 14 15 16 17 18 and 19mm 10 x 12in deep impact sockets 10 11 12 13 14 15 16 17 18 and 19mm