Available in various sizes to fit any need, these high-quality Hex Screwdriver Bits offer convenient double knurls and a 12 point bi-hexagonal side drive design for improved torque. Features and Benefits Manufactured from high quality chrome vanadium, fully polished finish. Double knurl feature gives a high grip which is essential for a quick tool change when your hands are greasy/oily The 12 point bi-hexagon side drive design will give a higher torque than normal sockets Manufactured from chrome vanadium, fully chrome plated with a mirror finish and aluminium-free to ensure non-sparking Chamfered leading edge ensures easy fastener location Technical Information Overall length: 37mm Bit length: 19mm Standards Met Conforms to DIN Typical Applications Ideal for assembly and servicing of small precision mechanisms associated with electrical, electronic, ignition and refrigeration work. All bi-hexagon unless stated.