The ratcheting mechanism on this stubby screwdriver lets you work faster with more efficiency. Includes 1/4-inch and 5/16-inch nut drivers. With its Cushion-Grip handle, the stubby interchangeable screwdriver/nut driver was designed for comfort and efficiency. Made of the highest-quality tempered steel, the strong, durable tips are manufactured with square edges to securely fit screw opening. They resist slippage and provide positive turning action. The strong nut driver function improves bit-holding power, even for tough applications.