The box contains 16 witte industry bits with a length of 25 mm and a hexagonal drive 14 inch witte industry bits impress by their consistently high quality through advanced processing a complex hardening process ensures a permanent hardness of 59 61 hrc for high requirements in industry and handiwork witte industry bits are generally made only from high quality raw material and reach high torque values far above din standard with long service life the combit box 17 fits comfortably in any