Durable Materials: The glass tip features a durable tungsten carbide tip and aluminum body, so hard materials such as steel, stainless steel, ceramic, and glass can be easily handled. Disposable tungsten carbide ball-press blades are more durable than other blades and do not fall off easily.Magnetism: The permanent magnet of this engraving tool can pick up small parts in hard-to-reach places and collect steel shavings.Comfortable to use: Convenient pen design and convenient pocket holder, knurled aluminum handle for maximum control and comfort.Easy to store: When not in use, the tungsten carbide tip can be flipped over.ReplaceablePackage: 4 sticksAdvantage:1.Sturdy construction built to last2.Simple and comfortable to use3.Easy to carry and store4.Four free replacement tungsten carbide tips5. Wide application6.Excellent after-sales serviceSpecifications:Size: Length: 137 mmWeight: 18.2 gScriber material: aluminum, tungsten carbide, magnetPackage content:4 x carbide tips,"