Pneumatic Air Pencil Die Grinder Kit Scribe Hammer Engraving Lettering Tool Hose Engraving Pen ,Compatibility

-Quick lettering, use for flexible and comfortable -Pen needles is made of special alloy steel, good durability -Depending on the difference of material ,depth can be up to 1mm -Works great on metal, wood, plastic, s, stone, porcelain and other hard material -This configuration is great for marking tools, parts and more