Hardened chrome vanadium steel shanks with chemically-blackened magnetic tips to ease the whole process and hold the screws. This makes them resistant to oxidation and corrosion hence increasing their longevity.
Ergonomic rubber handles with high-grip textured panels. Highest possible torques due to integrated hexagon head socket for open-ended spanners.
The tips of the screwdrivers are chemically blackened to provide them immunity against denaturing and thus maintain their shape.