
PERFECT SIZE: For precise drilling of various sizes from 5-35 mm in diameter, one drill can handle holes of different sizes. QUALITY MATERIALS: Classic high-speed steel, titanium coating on the surface, suitable for drilling holes in aluminum plates with a thickness of 1-4 mm, also suitable for plastic and wood. LASER ENGRAVING: The size is laser engraved into the metal, so it will not wear out even if reused, making precise drilling easier. EASY TO DRILL: The marking hole position and double flute design make drilling faster and smoother, as well as precise drilling. PRECISE POSITIONING DRILL BIT: When you press on the surface, it produces an automatic, high-impact, spring-loaded striking force, and an adjustable cover allows the striking force to be adjusted. The knurled surface of the HSS body is very non-slip, providing precise positioning points without worrying about deviations. Features: No need to use center punch, compared to ordinary drill bit is not easy to be broken. With