Klein Tools 633 4-Piece Nut Driver Set Features:

• 3'' (76 mm) hollow shafts make it possible to work on stacked circuit boards or other long bolt applications.
• Set contains 630-1/4, 630-5/16, 630-3/8 and 630-9/16 nut drivers.
• Tip-Ident quickly identifies nut driver hex orientation and size by color coding the handle ends so you can easily engage the nut driver with the fastener.
• Shafts are chrome-plated for smooth feel and corrosion resistance.
• Internal flanges provide solid, twist-resistant shaft anchor.
• Cushion-Grip handles for superior torque and comfort.

• Always wear approved eye protection.
• NOT insulated. Will NOT protect against electrical shock.