Step drill bit 4-20 mm, Ronix RH-5901

♦ The design of the step drill allows drilling holes of different diameters with one drill ♦ Used for drilling steel, stainless steel, copper, and aluminum sheets ♦ Made from HSS tool steel and coated with titanium for increased wear resistance ♦ Drill step diameters: 4 mm / 6 mm / 8 mm / 10 mm / 12 mm / 14 mm / 16 mm / 18 mm / 20 mm Model: RH-5901 Drill type: step Material: HSS Sharpening angle: 125° Number of steps: 9 Drill diameter: 4–20 mm Coating: titanium Overall length: 74 mm Maximum material thickness: 4 mm