BCLONG 4-22mm HSS Spiral Fluted Step Cone Drill Bit Titanium Carbide Mini Hole Cutter

Details: *100% brand new and high quality. *The Spiral Fluted of its unique structure a bit can open a variety of specifications of aperture. *Do not need to use center punch compared with the ordinary drill is not easy to be broken. *Deburring chamfering elliptic hole enlargement the function of them was unable but it is possible. *The use of tools: drill bench drill. Work while water cooling can effectively extend the service life of drill bit recommend drilling rate of 250-400 RPM. *Cutting material: sheet iron plate aluminum wood insulation boards PVC plate thickness within 5mm. Use a drill to make a variety of eyelets *Color: Gold (As Pictures Show) *Material: HSS *Surface: Titanium coated *Standard: 4-22mm (4 6 8 10 12 14 16 18 20 22mm) Package Contents: 1*Step drill bit Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.