Ideal for finishing, smoothing and high-lustre polishing of all precious, semi-precious and non-precious metals, acrylics and ceramics. Generate minimal dust and heat and eliminate the need for polishing compound on all precious, semi-precious and non-precious metals. Recommended operating speeds for most applications is 3,000-18,000 RPM. Lower speeds allow a softer touch, greater flexibility and more subtle results. Higher speeds provide more aggressive material removal. Using the tips of the pin with light pressure maximizes tool life.