These Dunnet Tools grinding Discs Are Ideal For Fast And Clean Cutting Of Iron, Steel, Stainless Steel, Copper, Aluminium And All Other Ferrous Metals. They Are Convenient To Use With Angle Grinders In Hard To Reach Areas. Thanks To The Small Thickness Of The Grinding Wheels At Only 1.6mm, They Will Produce A Fast, Precise And Clean Cut With Minimal Burr And Material Waste. The Cutting Disc Set Is Made Of High-quality Corundum Grain And Is Reinforced With A Double Glass Fibre Mesh. This Multilayer Construction Improves The Lifespan And Improves The Precision And Cleanliness Of The Cut. Please Ensure That You Wear Suitable Personal Protective Equipment When Using These Cutting Discs And Do Not Exceed The Specified Maximum Speed Of This Cutting Disc. Technical Specifications: Three Inch/ 75mm Cutting Discs. Designed With A Multilayer Construction For Better Cutting. They Are Ideal For Metal Such As Aluminium, Stainless Steel Etc. They Have A Maximum Rpm Of 20,000.