Volt-tested' to ensure safety on or near electrical equipment up to 1000V AC or 1500V DC. Insulated blades with magnetic tips. Conform with DIN 7438 and DIN EN 60900. Parallel Tip Slotted head screws are the most commonly used screw. 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.