The BlueSpot 5 PCE 450MM Long Screwdriver Set is designed for driving and loosening screws in difficult to reach areas. All of the screwdrivers have a hex bolster on the shaft so that you can add extra torque is required. The screwdriver blade is manufactured from chrome vanadium that is hardened and tempered. The screwdrivers have an ergonomic soft grip handle for user comfort.