"15-Piece 3/8\" Drive 12-Point Metric Socket Set","Opti-Torque(TM) applies torque to fastener sides, not corners which allows more torque to fastener and longer life.","Counter-Torque(TM) distributes the torquing stress uniformly throughout the socket extending socket life.","Hi-Visibility to identify socket sizes at a glance with oversized laser markings (red for SAE, blue for metric).","Includes sizes: 8mm - 22mm","Packaged on a nylon rail 3/8" DRIVE 15 PIECE METRIC 12 POINT CHROME SOCKET SET SBM152TA | Matco Tools