With a range of sizes and grits, these brushes have a huge range of applications and can be used on many materials including; Steel, Silver, Gold, Wood, Plastic, Aluminium. The discs are embedded with abrasive meaning no need for messy compound. The grit is consistent through their lifespan, they produce an even and repeatable finish time after time. The brush design is cool running and prevents clogging. They are flexible, enabling the user to work in tight areas.