3/16 NITRO-TIP DRILL BIT DB316NT | eBaydiy Tools

Single drill bit
Nitro-tip design cuts up to 37% faster and stays sharp up to 50% longer
Easy self-starting tip that allows for work on curved surfaces and without starting with a smaller bit size
Specialty nitride coated flutes to prevent chip build up and aid in chip extraction
3-flats on shank