✔ 【High-Speed ope-ration】: This dual-head pneumatic engraving machine boasts speeds of 400-8000 rpm, with adjustable air pressure from 0-60 PSI, enabling fast and efficient engraving, saving time and effort, and achieving high productivity. A footswitch control makes ope-ration even more convenient. ✔ 【Precise and Adjustable Pressure Gauge】: This pneumatic engraving machine has a stroke rate of 400-8000 strokes per minute, is equipped with a throttle offset adjustment valve for adjustable throttle response, and features a two-stage precision air pressure regulator. ✔ 【Ergonomic Design】: The engraving machine features an advanced ergonomic design, equipped with a front-mounted air pressure regulator, quick-connect air line connectors, and an advanced valve pulse mechanism for quiet and vibration-free ope-ration. ✔ 【Filter Design】: The pneumatic engraving machine is equipped with a filter to easily remove impurities during the engraving process, ensuring stable ope-ration and extending the machine's lifespan. ✔ 【Applications】: Suitable for engraving a variety of materials, including metal, gemstone jewelry, handicrafts, and ironwork, making it a great tool for engraving enthusiasts.