Kraftform Compact Micro Set for precision mechanical applications. Suitable for accepting bits with a 4 mm half-moon drive (Wera Series 9) and bits with a 4 mm HIOS drive (Wera Series 21). Handle/changeable blade system for lightning-fast blade exchange. Kraftform Micro handle with a rotating cap and quick-turn zone for rapid spinning. No more time-consuming repositioning is necessary. Power zone with integrated soft zones for transferring high loosening and tightening moments. Precision zone directly above the blade for the correct torque angle during adjustment tasks. Comes with 10 bits for manual and machine-operated fastening. Lightning-fast bit fixation: simply slide the bit into the holder, automatic locking, secure fit. To change the bit, just slide the sleeve forward and remove the bit. Free-running operating sleeve for easy guidance of the tool during the screwing process.