Wera 05074710001 7400 Series Kraftform Adjustable Torque Screwdriver With Rapidaptor Quick-Release Chuck comes with a variable torque setting option with highest precision. Simple adjustment of the required torque value without any special tools. Easy-to-read scale value; audible click signal. 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 1/4'' hexagon head drive as per DIN ISO 1173-C 6.3 and E 6.3 (ISO 1173).