High-quality bits of stainless steel for hexagon socket screws.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 more or less eliminated.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. 1/4" hexagon, suitable for holders as per DIN ISO 1173-D 6.3.* WER30770A: 2.0mm Tip size, 25mm blade length* WER30770B: 2.5mm Tip size, 25mm blade length* WER30770C: 3mm Tip size, 25mm blade length* WER30770D: 4mm Tip size, 25mm blade length* WER30770E: 5mm Tip size, 25mm blade length* WER30770F: 6mm Tip size, 25mm blad length