Kraftform Compact Micro set for precision applications. For bit holders with a 4mm half-moon drive (Wera series 9) and bits with a 4mm HIOS drive (series 21). Electric surface resistance up to 10^9 ohms for safe protection against electrostatic energy. Manufactured according to DIN EN 61340-5-1. Compact grip/interchangeable blade system for lightning fast blade changes. Kraftform Micro grip with swivel head and quick swivel zone for lightning fast tightening, without time-consuming grip replacement. Impact zone with integrated soft grip surfaces guarantees the transmission of loosening and tightening torques. Precision zone directly over the blade for correct angle of rotation while performing adjustments. Bits for use with hand and power tools. Lightning fast bit attachment: Simply insert the bit in the holder. Automatic locking with a secure fit. To change the bit, simply slide the socket forward and remove the bit. Freely rotating socket that makes it easy to control the tool when screwing.