The Knipex 98 13 Series Screwdriver has an insulated chrome vanadium molybdenum steel blade and an ergonomic, dual component handle for reduced fatigue and optimum transmission of force. VDE tested up to 10,000V and safe for work up to 1,000V. They conform to DIN EN / IEC 60900. The handle design gives a greater torque action and will prevent rolling of worktops, benches etc. Ideal for all electrical applications around the home or work place. Specifcation. For: Hexagon Socket Screws 3.0mm Overall Blade Length: 75mm Length of Non-Insulated Blade: 15mm Handle Length: 107mm Overall Length: 182mm.