The Klein JTH6M4 4mm hex Journeyman T-Handle features a T-Handle design that delivers more torque to the fasteners. The part number and hex size appear on the handle for easy, positive identification. Other features include: molded-in finger grooves for comfort. Treated steel for rust and corrosion resistance. Color-coded handle: Blue for metric, black for inch. Soft touch grip for maximum control and comfort. Blade length: 6-inch. Hex size: 4mm. Safety information: always wear approved eye protection. Not insulated - will not protect against electrical shock.