About This Premium Quality: Crafted from M35 Cobalt High Speed Steel with cobalt coating, our countersink drill bits boast unparalleled toughness, high temperature threshold and long-term durability, delivering consistently exceptional results Impressive Performance: Used after pre-drilling for screws or deburring holes as well as chamfering the edge of a part, they cut cleanly and are chatter-free. The cone tip assures accurate centering, also the enlarged spiral flute prevents chips from clogging and ejects chips rapidly. Designed to handle tough materials like stainless steel and other high-performance alloys Versatile Application: Our drill bits are compatible for use with a range of drilling machines, table drills, milling machines, cordless drills and impact drivers. Perfect for machinists, DIY enthusiasts and homeowners Portable and Convenient: Our countersink chamfer tools come with individual storage cases for easy portability. Say goodbye to lost bits and restless searches for the right tool Comprehensive Tool: 1PC 5-10MM countersink chamfer tool is included, providing for your drilling needs Overview Material : Cobalt, Cobalt Steel Cutting Diameter : 10 Millimeters Finish Type : Titanium Aluminum Nitride Shank Type : Round Shank Brand : VALYRIANTOOL