1/4" x 75mm Rapidaptor BiTorsion Universal Screwdriver Bit Holder - 897/4 R - 

Wera 897/4 R Rapidaptor BiTorsion bit holder for drill/drivers. Wera created the BiTorsion system to maximise the service life of bits in drill/drivers. The combination of both the torsion zone in the holder and the torsion zone in the bit dramatically extends the service life. The BiTorsion system absorbs the peak loads from drill/drivers and therefore the drive tip is protected. Rapidaptor technology has been developed by Wera for rapid bit change without any extra tools and also only requires one handed use. Rapid-in allows the bit to be inserted without moving the sleeve, thanks to a self-lock mechanism the bit automatically locks in securely. Rapid-out allows for the bit to be changed by simply pushing the sleeve forward, this works via a spring mechanism lifting the bit off the magnet. 1/4" hexagon drive bit holder.