Step drill, step D.4-39mm, shank D.10mm, L.107mm, HSS, bright, 12 steps, BOSCH

The HSS step drill creates smooth, burr-free holes of various diameters. It is ideal for drilling and enlarging holes. No center-punching is required, as the drill tip with cross-grind facilitates initial drilling. The CNC-milled spiral flute optimally removes chips and allows for uniform drilling. Axial and radial relief grinding enable maximum cutting performance and absolutely smooth results. The step drill is suitable for thin material made of non-ferrous metal, stainless steel, and plastic, as well as steel sheet and plastic panels. The step drill is made of HSS steel and is extremely durable when used with coolant. The clearly visible and permanent diameter markings in both spiral flutes are laser-etched. Furthermore, the 3-flat shank prevents slipping in the chuck and allows for the transmission of high torques. Additional technical specifications: · Design: HSS · Step diameter (range): 6-39mm · Step height: 4mm