steel , high hardness , high strength , and durability Compatible for most rotary tools and die grinders easy to grasp and use , safe and Ideal-for ferrous and non-ferrous metals , wood , and even stone cleaning , trimming , carving , cutting , shaping , grinding , welding , chamfering , casting , deburring , polishing and sharp-edges , ewelry making , cylinder head porting and sculpting Can be used to process iron , steel , carbon steel , alloy steel , copper , aluminum and other metals and marble , jade , bone and other non-metal Double-cut has rows of cutting teeth cut in two intersecting directions for fast removal and a rougher finish, Manufacturer: Watreketal