Step drill - Ф 4 - 20mm, HEX 1/4" HSS+TIN

The TOLSEN drill is stepped in 2 mm and has a total of 9 holes from Ф 4 to Ф 20 mm. The tail Ф 8 mm and length 74 mm. The step drill is made of quality HSS steel, hardened, with titanium coating on the surface.