Finally, a perfectly shaped Combo-Tip driver. Combination-Tip Drivers are designed for maximum contact with combination head screws most commonly found on electrical devices and fittings. Custom heat treated to withstand the torque needed to fasten all types of combination head screws. Iconic Cushion-Grip handle for maximum comfort and torque. PRODUCT FEATURES: • Precision machined tip designed for combination head screws. • Includes three nut driver sizes (1/4'', 5/16'' and 3/8''). • Includes #1 & #2 combination, slotted, square and Phillips tips. • Custom heat-treated for long life. • Cushion-Grip handle for maximum comfort and torque.