If you do a lot of engraving then this is the tool for you. A very durable yet sleek design enables the user to do engraving on almost anything. Glass, precious metals, and plastics. It has a very low noise level and produces about 500+ strokes per second. It is vibration-free and uses 80 PSI air pressure. It includes a tungsten carbide medium tip stylus. Other stylus tips are available and sold separately. A must in every tool kit.