Designed for speed, precision, control, and versatility the Pro Bit Driver is ideally suited to assembly and tuning, and easily adapts to different tasks Ergonomic machined aluminum body with bearing-mounted rotating cap for precision and control Magnetic bit drive accepts any standard 1/4" hex bit Internal storage for two bits and is also compatible with Pedro`s Multi-Torque Bit Set Available with your choice of hex/torx bits or Phillips/Flat screwdriver bits