Wera torque screwdriver. 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).