Impact rated sockets for use with 1/2 Inch drive impact wrenches. Manufactured to highest standards to ensure application durability. Black oxide finish with laser marking. Supplied in a sturdy case. 17 PC IMPACT SOCKET SET(6,8,10,11,12,13,14,16,17,18,19,20,21,22,24,27MM&1/4"TO 1/2" ADAPTOR )