Feature

●HSS and titanium coated: these step drill bits are made of heat-treated high-speed steel (HSS) with titanium nitride coating. Titanium coated to reduce friction and effectively extend service life. This step drill also has good corrosion and rust resistance.
●【Spiral Flute Triangle Round Shank Design】Spiral Flute - Allows for faster, more stable and smoother cutting. It can automatically chamfer the hole to clean the drill. Triangular round shank: can be easily inserted into power screwdriver, drill and press drill.
●29 sizes: 3 standard size step drill bits have the following 29 sizes: 15 steps: 4-32 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, 30 mm, 32 mm); 9 steps: 4 - 20 mm (4 mm, 6 mm, 8 mm, 1 0 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm); 5 steps: 4-12 mm (4 mm, 6 mm, 8 mm, 10 mm, 12 mm). A variety of drill sizes is perfect for your needs and saves you time.
●Not suitable for drilling and cutting hard metals such as stainless steel.
●【Service Guarantee】Customer satisfaction is our greatest motivation, we will do our best service, if you have any questions about this step drill, please feel free to contact us.


Description

These step drills are made of heat-treated high-speed steel (HSS) with titanium nitride coating. Titanium coated to reduce friction and effectively extend service life. This step drill also has good corrosion and rust resistance. .Spiral flute allows for faster, more stable and smoother cutting. It can automatically chamfer the hole to clean the drill. Triangular round shank: can be easily inserted into power screwdriver, drill and press drill.Customers is our greatest motivation, we will do our best service, if you have any questions about this step drill, please feel free to contact us.