Classic bit set
HERMAN QSB-16 | 90mm
4 bits in set

Flexible TorZon™ torsion zone on the extended shank:
the bit behaves like a strong spring when screwing, minimising the possibility of breakage when overloaded with high torque

Precision-machined bit tip:
fits snugly into the head of the screw, minimising the possibility of damage to the head during screwing

Hardened from tip to shank:
the same properties over the entire length of the bit

Heat treatment optimised for the intended use:
the bit is sufficiently hard and tough for use in standard industrial conditions

Primary material S2 (chromium-silicon-manganese-molybdenum-vanadium steel):
ideal for extremely durable, high-quality bits

With ¼" hexagonal shank (form E 6.3 according to DIN ISO 1173):
suitable for clamping in three-jaw chucks and for all 1/4" standard hexagonal bit holders (form D 6.3 according to DIN ISO 1173)

Surface finish / hardness:
grey phosphated /HRC 58~59

Warning:
the standard bit is not suitable for impact driving