Premium bits for TORX® socket screws. The clamping force resulting from the seating stress between the tip and the screw profile keeps the screws securely on the tool. Take it easy tool finder with colour coding by size. 1/4" hexagonal, suitable for holding tools as per DIN ISO 1173-D 6.3. Also suitable for Würth ASSY screws as well as Altenloh SPAX T-STAR plus screws