Channellock ND-7CB Code Blue Nutdriver Set, 7-Piece Set Includes: 11/32", 1/2", 1/4", 3/16", 3/8" 5/16", 7/16" Code Blue Nutdrivers Nutdrivers with full hollow shafts High torque, 3-sided Code Blue grips Laser etched steel caps for easy identification