A fully insulated screwdriver VDE tested up to 1000V. Professional high grip handles, magnetic tips, chrome vanadium steel blades. | | Parallel Tip | Slotted head screws are the most commonly used screw. To safely drive these screws, the tip of the screwdriver should be of the same width as the slot in the screw head and fill it as well, to minimise slipping and deforming the screw head.