1、Ergonomic Design: The overall design of this air grinder is ergonomic and lightweight, making it more comfortable to use for longer periods of time. 2、Quiet Running: The exhaust hose assembly of the pneumatic engraver, quiet operation and low vibration, also provide you with a non‑noisy working environment. 3、Small and Lightweight: The small and light design makes it easier for users to operate the grinder and work in tight places. 4、Ball Bearing Construction: Durable ball bearing construction improves balance, reduces vibration and ensures longer life. 5、Wide Application: This engraving machine is suitable for iron plate, mechanical assembly, construction, automobile, aircraft and other manufacturing industries.