1.Pen needles is made of special alloy steel, good durability. High-speed rotation,improve grinding speed. 2.Small size, light weight, pen design, quick lettering, easy to use one hand. 3.The Metal Engraving Tools Features a durable tungsten carbide tip, aluminium body making it works effortlessly on hard materials including hardened steel, stainless steel, ceramics and glass. One-time briquetting tungsten carbide tip is more durable than others, not easy to drop. 4.Scribe tool point is replaceable, each package comes with 1 free replacement carbide tip for use. 5.Pneumatic Engraver Widely used in lettering category marker effect on the surface of the metal, porcelain, glass, plastic, marble, wood, stone, arts crafts, jewelry, porcelain and other hard .
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