Handle wiha softfinish electric multi component handle with rolling protection bit intake clickfix quick change bracket securely locks the bits only for 6 mm slimbits bits high quality chrome vanadium steel pierced hardened bronzed directly on the bit die cast protective insulation which is fully integrated into the bit on front unit tested protective insulation 1000 v ac vde and gs approved use for working on live parts up to 1000 v ac easy access to deep lying screw clamps well