• Professional step drill bit designed for precise drilling in various diameters. • Versatile drilling range from 4 mm to 30 mm in a single tool. • It has 14 defined steps with 2 mm increments for exact control. • 10 mm shank or clamping handle compatible with most drills. • Made of high-resistance materials to ensure durability and clean cuts. • Ideal for work on metal sheets, plastics, and other construction materials.