Engraving pen is a multi-functional tool suitable for various materials including metal (such as aluminum, iron, stainless steel), glass, porcelain, ceramics, stone, plastic, and wood, ideal for fossil preparation, jewelry making, and other arts and crafts projects With a speed of 34,000 per minute (BPM), which is adjustable easily via a rotary switch, this hand metal engraver pen ensures efficient and precise engraving work on different surfaces Pneumatic engraver pen has a high-strength stainless steel body, designed in a pen style, and comfortable to grip, enabling easy control during long-term engraving tasks Pneumatic engraving pen comes equipped with a 4.3ft hose and a 1/4Inch air coupler, providing flexibility and convenience in your workspace Air scribe engraving pen includes 1 x extra tungsten carbide tip and 2 x wrenches, making it a breeze to replace the tip when needed Color:Black Material:Metal+Plastic Package Contents: 1 * engraver pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.