Wera 05074786001 7400 Series Kraftform ESD Adjustable Torque Screwdrivers have dependable protection against electrostatic energy and associated damage. Variable torque setting option with highest precision. Simple adjustment of the required torque value without any special tools. Easy-to-read scale value. Rapidaptor quick-release technology for rapid bit change. Unlimited torque to loosen seized screws. Multi-component Kraftform handle with hard and soft zones for high working speeds, whilst being easy on the hand. Suitable for bits with a 4 mm Halfmoon drive (Wera series 9) and a 4 mm HIOS drive (Wera series 21).