IRWIN TorqueZone Stubby Screwdrivers. TorqueZone screwdrivers are designed for optimal turning force and comfort, providing speed in high or low torque applications. TorqueZone design for optimal comfort and torque. Ends of handles are stamped with tip type for easy identification. Heat treated precision tip geometry for superior fitment, reducing stripping and cam-out. Size 1-1/2” - 1/4”.