The blade is precision-ground with a radiused, hollow-ground shape for strength and a parallel section to fit screw slots without damage.
The shank design is long and parallel, allowing for repeated regrindings and fits into narrow recesses, with a hex section for additional turning power.
Custom-designed handles provide a comfortable grip for both high-torque and precision tasks, with a consistent hand-fit across all 20 screwdrivers in the set.