100% brand new and high qualityGreat for grinding both metals (i.e. copper, aluminum, etc.) and non-metallic materials (marble, jade, plaster, etc.)HRA processing hardness = up to 80High efficiency grinding - Up to 1000% more efficient than manual files and wheelsReplaces small grinding wheels thereby reducing dust pollutionExtremely durable - Lasts up to 10X longer than than high-speed steel cutting tools, and 200 times longer than wheelsAllows for smooth, precise, and high-quality cuts and finishesSafe, reliable and easy to use!Package includes:10pcs/set
