The Air Engraving Pen is used to write on hard steel, metal, glass, stones, ceramic, plastic etc. also useful for debugging, to reshape the cut on the screw-head or broken bolts to ease removal , and naturally,to personalize tools and other equipment in the workshop. ⚙️ Specification Vibration frequency 3,0000 bpm Avg. Air Cons. 1.77 CFM (50 l/min)(0.05 m³/min) Air Pressure 116 PSI (8 bar)(0.8 mpa) Net Weight 0.24 Kgs (0.53 lbs) Overall Length 180 mm Tool Diameter 17 mm Air Inlet 1/4″ Air Hose I.D. 1/4″ (6.5 mm) Packing 20pcs/ctn/1.74cu-ft/GW:7.0kg
