Every drill bit is manufactured utilizing the highest quality materials using CNC technology and tested to exceed the highest industry standards. Titanium-coating prevents wear and corrosion, allowing for increased drilling speeds and longer bit life. Titanium-coated drill bits reduce friction and increase drilling speeds in metal. 4-in-1 Drill/Driver allows for drilling, countersinking, counterboring, then flip the insert and drive the screw. Includes plug cutters, self-centering drill/driver and screw guides.