Product features and benefits Precise multi-size drilling: Four drill diameters (2.8 mm / 3.2 mm / 3.5 mm / 4.0 mm) cover common screw-hole requirements so you can create correctly sized pilot holes and achieve flush, concealed screw heads. All-in-one operation: Drill, countersink and limit depth in a single step to save time and ensure consistent, repeatable results. Durable cutting performance: High-quality alloy construction for robustness and long life. The countersink uses a four-flute design for smooth, accurate cuts and reduced tear-out. Controlled screw depth: Adjustable limiting ring with an index groove provides stepless depth adjustment from 0 to 12 mm, so you can match different screw head lengths and avoid overdriving or breaking through the surface. Designed for wood: Optimized for woodworking tasks and furniture fasteners; produces clean pilot holes and neat, recessed countersinks for a professional finish. How this solves common problems Eliminates guesswork: Integrated depth stop prevents screws from sitting too high or cutting through the material. Speeds up assembly: Combining drilling and countersinking in one pass reduces steps and increases consistency across multiple holes. Improves appearance and strength: Properly sized pilot holes and flush countersinks reduce splitting and hide screw heads for a cleaner look. Performance and compatibility Sizes: 2.8 mm, 3.2 mm, 3.5 mm, 4.0 mm drill diameters. Material: High-quality alloy body and countersink with four cutting edges for smooth performance. Depth range: Adjustable 0–12 mm using the limiting ring with an indexing groove. Best for: Wood screws and common furniture fasteners in soft and hardwoods. Practical applications Furniture assembly: Create precise pilot holes and flush countersinks when building or repairing tables, chairs, cabinets and flat-pack furniture. Cabinetry and trim work: Recess screw heads cleanly for hinges, drawer fronts and trim without splitting delicate edges. DIY woodworking projects: Use for jigs, shelves, picture frames and other joinery where consistent screw depth and appearance matter. What you’ll notice Faster, neater drilling and countersinking in one operation. Less material damage and fewer stripped or overdriven screws. Reliable, long-lasting tool performance thanks to alloy construction and four-flute countersink design.