Universal holder for bits with a 1/4" hexagonal drive according to DIN ISO 1173-C 6.3 and E 6.3 (ISO 1173). The Wera BiTorsion holder has a torsion spring that absorbs small peak loads when screwing. Combined use with BiTorsion bits and their torsion zone significantly increases service life. However, the Wera BiTorsion holder can also be used with conventional bits. Rapidaptor technology makes it possible to insert bits without handling the socket. The bit is removed simply by pushing forwards. This enables lightning quick bit changes, even with one hand. 1/4" hexagonal, for screwdrivers with a DIN ISO 1173-F 6.3 drive.