Sawtoothedge design on each bit provides clean entry and smooth, efficient drilling after initial penetration, helping you finish projects with less effort. Compatible with a range of materials including thin wood, solid timber, layered boards, and aluminum alloy, enabling precise holes and slots across common applications. Fully ground spiral grooves promote effective chip removal, reduce friction, and improve cooling for smoother, more controlled drilling. Suitable for both enthusiasts and professional tradespeople, the set covers a wide range of drilling tasks with ease and reliability. Practical use scenarios: Woodworking: drilling precise throughholes and pocket holes for cabinetry, furniture hardware, and joinery. Metalworking: creating clean holes and slots in aluminum alloy for brackets, fasteners, and component mounting. DIY and home projects: routing cable holes, installing hardware, and other tasks requiring accurate holes and slots. Why it stands out: Clear material compatibility with wood and aluminum Efficient drilling with low friction and good cooling from the spiral design Multiple bits in the set to handle various hole and slot sizes with consistent performance Performance guidance: use steady pressure and appropriate speed to maintain tip sharpness and achieve results.