Double cut burs are cross cut and ideal for machining cast iron, steel, stainless steel (INOX), nickel-based alloys, and titanium alloys. These burs have a high stock removal rate. Universal line burs are designed for fine and coarse stock removal on the key materials used in industrial manufacturing. They provide a good stock removal rate and are not specific to a particular material. This set contains three tungsten carbide burs in the shapes and dimensions most commonly used in the workshop. The sturdy plastic box protects the burs against dirt and damage.