The glass scribe features a durable tungsten carbide tip, body making it works effortlessly on hard materials including hardened steel, stainless steel, ceramic and glass. The tungsten carbide tip is more durable than others, not easy to drop. Magnet on this tool picks up and retrieves steel chips from hard-to-reach . Comfort to Use: pen-style design with convenient pocket clip, Knurled aluminum handle provides maximum control and comfort. Easy to : Each Engraving pen comes with a chuck for reversing tungsten carbide point when not in use. Color: silver Material: metal Package Contents: 5 x Scriber 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.