General description High-quality Sollbry HSS Triangle Conical Titanium Step Drill Bit is designed for drilling on various materials including steel, wood, plastic, brass, aluminum, and PVC. Made from high-speed steel (4241), these drill bits are engineered to drill through tough materials while minimizing heat and friction. The unique spiral design enhances drilling efficiency and prevents slippage, making it easier to achieve precise results. Technical specifications Material: High-speed steel (4241) Sizes: Ø 4-12mm, Ø 4-20mm, Ø 4-32mm Usage Ideal for home DIY projects and general construction or mechanical engineering. Suitable for drilling holes in stainless steel, wood, thin iron/copper, aluminum, PVC, and plastic. Other information Special cutting geometry allows for drilling and deburring even the thinnest sheet metal. Product backed by a quality assurance guarantee from the manufacturer.