Step drills 4-12, 4-20, 4-32mm. Brand: KRAFT&DELE. This professional three-stage drill bit set from KRAFT&DELE is designed for precise drill holes in metal, wood and plastics. Thanks to a wide range of diameters from 4 to 32 mm, the décor works well in the workshop, installation, locksmith and home repairs. The bits are made of high-speed HSS steel and coated with a titanium coating, which increases abrasion resistance and greatly extends the life of the tool. The special design allows thin sheets...