Application: Suitable for bits with 4 mm Halfmoon drive (and Wera Serie 9) and 4 mm HIOS drive (and Wera Series 21) Design: With quick-release chuck for rapid bit change Pre-set torque: 0,035 Nm, 0,05 Nm Accuracy: ± 10%. Reliable slipping mechanism and acoustic signal when reaching the set torque. Handle: Kraftform Micro with non-roll feature and rotating cap, multi-component