Wera stainless are made out of stainless steel which prevents the formation of unsightly extraneous rust.
The Hex-Plus profile offers a greater contact surface in the head of the screw. The notching effect is therefore reduced to a minimum and damage to the screw head is more or less eliminated.
Torsion zone: Torsion bits take up torque peaks and absorb them in the Torsion zone. This prevents premature wear and extends the service life of the bit.
¼" hexagon, suitable for holders as per DIN ISO 1173-D 6.3.