Witte titanium coated screwdriver bitWitte Screwdriver Bits are made to very exacting standards.They ensure maximum transmission of torque to the screw.This is achieved by a special hardening process and by ensuring an exact fit of the bit to Phillips screws. In addition there is a special recessed neck called the Flex-Zone which absorbs shock loads thus giving increased durability.There is also a special coating of titanium nitride on the bit which increases their wear resistance.The Bits have 1/4in hexagon drive and are 25mm long for the professional.Also available in plastic boxes suitable for the consumer.Size. No.2 Point Phillips. Length 25mm x 1/4in Hexagon Drive