Manufactured from chrome vanadium steel Heat treated for additional strength and durability All sockets are 6-point shallow design for use with 1/2" drive tools Packaged on a socket rail Sizes include 15mm to 28mm. 14-piece 1/2 in. drive metric set includes shallow sockets sized from 15 mm-28 mm. All sockets are 6-point. Manufactured with heat-treated chrome vanadium steel. Carded on socket rail.