For Phillips screws Ductile and tough for hard materials Torsion design against premature wear 1/4" hexagon drive (Wera connecting series 4) Suitable for AEG, ARO, Atlas-Copco, Biax, Black & Decker, Bosch, Buckeye Tools etc.
High quality bits with Torsion zone – where kinetic energy is diverted from peak loads. This greatly extends the product service life. Tough viscous, for universal use. 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3.