Klein Tools 5/16-Inch Keystone Screwdriver, 6-Inch Square Shank

Klein Tool's 5/16-Inch (8 mm) Keystone Screwdriver with 6-Inch square shank is designed for the most demanding uses. It has a Cushion-Grip™ handle for greater torque and comfort. Meets or exceeds applicable ASME / ANSI specifications and has Tip-Ident® that quickly identifies the screwdriver type and tip orientation.