Features: Experience unparalleled durability with our woodworking countersink drill bit set, crafted from 6542 high speed steel for superior wear resistance and high temperature tolerance. Featuring upgraded four flute countersink designs, this drill bit set ensures rapid, cleans hole cutting in wood, enhancing your projects efficiency and finish. For professional carpenters and diyer enthusiasts alike, these drill bits are a must having for precise woodworking tasks. Whether you're drilling screw holes in hardwood or creating countersinks for a seamless finish, this drill bit set is the perfects tool for your woodworking workshop. With lasers engraved markings for accurate depth adjustment and easily interchangeable head, this countersink drill bit set combines functionality and convenience for all your woodcraft needs. Specifications: Component:Aluminium Alloy Size:As Picture Shown Package Includes: 1Set Countersink Drill Bit note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.