Wera Torque Screwdriver. Provides secure protection against electrostatic energy and associated damage. Factory pre-set to the smallest scale value for torque. Suitable for all applications where a constant torque is required and repeat accuracy is essential. The torque value can be adjusted within the measuring range using an additional tool (re-calibration kit, available with code number 05137003001). After adjustment, the set value should be verified with a standard torque testing device. Features a quick-change chuck for rapid bit changes. Unlimited loosening torque for removing stuck screws. Multi-component Kraftform handle with hard and soft zones for high working speeds and to protect the palm. Compatible with 4 mm Halfmoon drive bits (Wera Series 9) and 4 mm HIOS drive bits (Wera Series 21). Please note: 1 Ncm = 0.01 Nm.