Enhance your DIY projects with this comprehensive 10-piece Electric Polishing Kit, featuring high-speed steel rotary burrs, grinding heads, and rotary burr cutting tools. Crafted from durable High Speed Steel 4241 with a hardness of HRC 60, these precision tools deliver exceptional grinding, engraving, and polishing performance on a wide range of materials. Designed for use with electric or pneumatic rotary tools, this kit ensures high working efficiency, a perfect grinding effect, and long-lasting durability. Key Features: · Premium High-Speed Steel Construction: Made from HSS 4241 with HRC 60 hardness, providing excellent wear resistance and extended tool life. · Versatile Material Compatibility: Ideal for processing metals such as cast iron, cast steel, carbon steel, alloy steel, stainless steel, copper, and aluminum, as well as non-metal materials including marble, jade, bone, and more. · Dust-Free Operation: Replaces small grinding wheels, minimizing dust pollution and maintaining a cleaner work environment. · High Efficiency & Precision: Offers smooth, precise cutting and polishing for detailed engraving, milling, and surface finishing tasks. · Easy to Use & Safe: Simple to install and operate with secure clamping, suitable for various electric and pneumatic rotary tools running at speeds between 6000-40000 RPM. · Compact & Lightweight: Each rotary burr features a 3mm shank diameter and 40mm total length, making it compatible with most mini-drills and engraving machines. Specifications: · Material: High Speed Steel 4241 · Hardness: HRC 60 · Shank Diameter: 3mm (0.24in) · Total Length: 40mm (1.57in) · Color: Silver · Item Weight: Approx. 27g (0.97oz) · Package Size: Approx. 8 x 3 x 1.1cm (3.15 x 1.18 x 0.43in) · Package Weight: Approx. 30g (1.06oz) Suitable Applications: · Precision carving and engraving on metallic and non-metallic surfaces · Milling and shaping of cast iron, steel varieties, copper, aluminum, and alloys · Polishing and detailing marble, jade, bone, and other non-metal materials · Ideal for use with engraving machines, mini-drills, and other rotary tools Package Includes: · 10 x High Speed Steel Rotary Burrs Optimize your craftsmanship with this reliable and versatile electric polishing kit, delivering professional-grade results for metalworking, woodworking, jewelry making, and more.