High-quality Wera bit for Phillips screws. It has a sharp-edged profile that ensures a dependable transfer of power between the bit and screw by breaking off the paint e.g. when screw profiles are covered in it. Extra-hard design: 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3.

A stands for aviation. A-Bits are particularly hard bits with a sharp-edged profile e.g. penetrates screw profiles full of paint (such as on fuselage panels) ensuring a dependable transfer of force between the bit and the screw.