This pneumatic jewelry engraver is a dual-head engraving system designed for engraving, carving, and finishing on metals, stone, and other hard materials. It features an adjustable 1200–6000 RPM operating speed and a 0–60 PSI pressure range with an integrated gauge for easy monitoring. A foot pedal lets you control power input for better control of cutting speed and depth. The compact, bench-friendly design makes it suitable for jewelry setting, polishing, and detailed craft engraving. Note: this unit requires an air compressor for operation.