Adjustable & versatile This countersink drill bit set features an adjustable depth and angle limit, allowing you to customize countersinking and drilling for a wide range of tasks. It works with wood, plastic, and soft metals, adapting to your needs for versatile, reliable performance. Enhanced drilling efficiency Designed to discharge chips quickly and prevent clogging, this set improves drilling efficiency. The ground edges provide smooth entry and exit, reducing effort and time per hole. Ideal for both professionals and hobbyists seeking easier, faster woodworking results. Premium materials & durability Constructed from ABS, 40CrV steel, and HSS materials, this set offers sturdy construction and long life. Its durable build resists damage and wear, making it a dependable choice for repeated use in demanding projects and helping to reduce replacement costs. Efficient chip removal & performance Equipped with an advanced chip removal design to prevent buildup and boost drilling speed. With strong bending strength and good abrasion resistance, these bits deliver smooth, clean holes even in tough materials. Use scenarios - Cabinetry and furniture assembly: flush countersinks for screw heads and precise joinery. - General woodworking and plastic work: accurate countersinking in softer woods and plastics. - Home repairs and hobby projects: neat, clean holes in aluminum, PVC, or other soft metals.