HSS Step Drill Bit, Vakki Double Slotted Conical Step Drill Bit (5mm-35mm) with Titanium Coating, Solid, Perfect for Drilling on Steel, Wood, Plastic, Brass, Aluminum

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 Material: The titanium alloy coating is made of high-quality HSS, which ensures extremely high durability and reduces friction and heat. Titanium alloy drill bits are especially suitable for processing thin pieces of copper and aluminum/iron plates/wood panels/plastic sheets and other thin sheet materials. Easy to Drill: The marked hole position and double flute design make drilling faster and smoother, as well as precise drilling. Laser Size: The dimensions are laser engraved into the metal so they won't wear off even after repeated use. Applicable Materials: Plastic, wood, copper, iron, fiberglass, PVC, metal fins, and aluminum (≤3mm)