HSS Step Drill Bit, Double Slotted Conical Cutter (5mm-35mm) with Titanium Coating, Solid, Perfect for Screwdriver Drilling on Steel, Wood, Plastic, Brass, Aluminium, PVC...

Perfect Size: For precise drilling of various sizes from 5-35 mm in diameter, one drill bit 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 metal materials. Easy Drilling: The marked hole position and double-flute design make drilling faster, smoother, and more precise. Laser-Engraved Size: The dimensions are laser-etched into the metal so they won't wear off even after repeated use. Applicable Materials: Steel, brass, plastic, wood, copper, fiberglass, PVC, metal fins, and aluminum. Every electrician/DIYer deserves this. It's made from high-quality HSS steel. Drill through hard objects as easily as cutting butter. HSS steel is a complex steel containing tungsten, molybdenum, chromium, vanadium, cobalt, and other carbide elements. It maintains high hardness for cutting at high speeds (around 500°C) and HRC>60.