Feature:1. High Speed Steel Material: Made of carbon steel material. High hardness, providing excellent cutting force and durability.2. Three Point Design: The woodworking countersunk drill adopts a three point design, which can make holes quickly and accurately.3. Combination Kit: Multiple combinations make the product adapt to more scenarios. Suitable for bench drills, hand drills and etc.4. Strong Practicality: Suitable for wood, fiberboard, particle board, plywood, plastic, PVC, rubber, etc.5. Simple To Use: The replacement operation is simple, no complicated installation tools and procedures are needed, just install and use.Specification:Item Type: Countersunk Drill BitMaterial: High Speed SteelApplicable Scenarios: Suitable for Bench Drills, Hand Drills And Conventional Electric Drills. Suitable for Wood, Fiberboard, Particle Board, Plywood, Plastic, PVC, Rubber, Etc. Package List:7 x Countersunk Drill Bit1 x Hex Socket WrenchNote:1. The drill bit must be kept completely vertical when drilling to avoid unevenness, otherwise the drill bit may be easily broken.2. It is best to use a bench drill. Poor positioning when using a hand electric drill causes the drill bit (especially 3mm / 0.1in and 4mm / 0.2in ) to bend and break easily.3. When the drill bit is damaged, only need to replace the counterbore device to continue using it.