Positive and secure fit of the BIT and better driving, e. g. when working overhead.
The small cylinder head can easily be countersunk in the timber with a reduced splitting of the material, providing for an impeccable visual appearance.
SPAX typical ground serrations
Quick and secure fastening.
Permits a safe and permanent connection of the wood parts.
Precision placement allows screwing in without pre-drilling (wood-dependent). Effectively reduces splitting of the wood.
Stainless steel A4 1.4578