Generic Pneumatic Engraving Pen, Precision Air Scribe, Glass Ceramics Metal Engraver

Pneumatic Engraving Pen with Precision Air Scribe for engraving on metal, glass, porcelain, ceramics, stone, plastic, and wood Adjustable beating speed through a rotary switch, geared to different materials for versatile settings High-strength stainless steel body with a lightweight, comfortable-to-grip pen style for easy control Equipped with a 4.6ft soft air hose and a 1/4" air coupler for convenient use Comes with 1 tungsten carbide tip and 2 wrenches for easy replacement of the tip Operates at a speed of 34,000BPM with an air consumption of 1.0CFM