851/1 BTZ bits
Wera 851/1 BTZ Extra Tough BiTorsion Long Service Life Bit, for Philips screws. Ductile and tough for use with hard materials.
Often bits break as they can't handle the peak stress put upon them, the tip breaks and damage is also often caused to the screw head. Wera designed the BiTorsion system to prevent premature wear and significantly increase the service life of the bit. The system uses a two-stage cushioning process which allows smaller impacts to be absorbed by the bit holder, and high impacts to be cushioned in the torsion zone of the bit. (The BiTorsion holder and the BiTorsion bit can be used independently of one another)
"Take it easy" tool finder is used in accordance with profile and size, for fast and simple selection of the required tool.
1/4" Hexagon drive makes it suitable for DIN ISO 1173-D 6, 3 bit holders.