Material: High speed steel 9341. This material is suitable for drilling various metals with medium to low hardness, including stainless steel, iron, copper, aluminum alloys and other metals. It offers medium to high durability in use, and its performance is better than HSS 4241/4341. General purpose: Good for most general purpose applications, with a balance of hardness and toughness for wear resistance. Reduced shank: Extends the size range of a portable drill chuck. Common flute and overall length for minimal adjustment when changing tools. Wide application: Designed for drilling in low and medium tensile strength materials such as aluminum, iron, copper, brass and metal. Use scenarios: - Drilling aluminum alloy panels, brackets, and extrusion components in fabrication or maintenance. - Drilling copper or brass fittings and hardware for plumbing or electrical installations. - Drilling mild steel or iron components where medium hardness is sufficient for assembly tasks.