14 Bit Hex Titanium Coated Step Cone Drill Bit Hole Metal Wood Cutter 4-22mm HSS Tool #00 Screwdriver

Type: drill bit Color: golden Material: Surface: titanium coated Features: Design Useful Tool 4-22mm Standard: 4-22mm (4 6 8 10 12 14 16 18 20 22mm) The ladder of its unique structure a bit can open a variety of specifications of aperture Package included: 1 x step drill bit Note: Please allow 1-2mm errors due to manual measurement Item color displayed in photos may be showing slightly different on your computer since monitors are not calibrated same Do not need to use center punch compared with twist drill is not easy to be brokenDeburring chamfering elliptic hole enlargement twist drill the function of them was unable but it is possible The use of tools: drill drill. Work while water can effectively extend the service life of drill bit recommend drilling rate of 250-250 Cutting material: sheet iron plate aluminum wood insulation boards plate thickness within 5mm. Use a drill to make a variety of eyelets