Now the bit plays its part: Thanks to an innovative hardening procedure, the bit can also absorb load peaks in the centre area. As a result, bit tip breakages appear much later than in conventional screw inserts.
A spring, which has been subtly integrated into the bit holder, absorbs load peaks: The bit holder interior rotates imperceptibly and invisibly as well. When the spring force is exceeded, the bit holder stops to prevent damage to the mechanism.