Skew Products PPR-5330 RollerDriver Pistol-Grip Roller-Clutch Ratchet-Action Screwdriver. This model adds two position pistolgrip handle for greater efficiency and comfort. The RollerDriver is a reversible roller-clutch driver that provides smooth, silent, and stepless ratcheting action. Rugged alloy construction provides high torque capacity and assures long life and trouble-free operation. Magnetic bit holders accept all industry standard 1/4" hex bits.