Perfect size: For precise drilling of various sizes from 5-35 mm in diameter, one drill can handle holes of different sizes.High-quality materials: Made of high-quality HSS, the titanium coating ensures extreme durability and reduces friction and heat. The titanium drill bit is particularly suitable for machining copper and aluminum parts, cast steel, spring steel, cast iron parts, iron, and other metallic materials.Easy to drill: The position of the marking hole and the double flute design make drilling faster and smoother, as well as precise drilling.Laser size: The dimensions are laser engraved into the metal so that they do not wear off even after repeated use.Applicable materials: steel, brass, plastic, wood, copper, fiberglass, PVC, metal fins and aluminum.Every electrician/DIYer deserves itIt is made from high-quality HSS steelPierce hard objects easily, like cutting butter.Made of HSS steelIt is a complex steel, containing tungsten, molybdenum, chromium, vanadium, cobalt, and other carbide elements.It maintains high hardness for cutting at high speed (approximately 500°C), and HRC60