Durable materials: The glass scriber has a durable tungsten carbide tip and aluminum body, and can mark hard materials, including hardened steel, stainless steel, ceramics and glass. Permanent magnet: These scribing have a permanent magnet on the tool, which can and recover steel scraps from inaccessible . Easy to use: convenient pen design and convenient pocket clip, knurled aluminum handle provide maximum control and comfort. When not in use, the tip of tungsten carbide can be reversed. Widely used: These tungsten carbide scribers can be used to carve, etch, carve or mark any type of metal, glass, concrete, gem, ceramic tile, ceramic, plastic, etc. This utility will provide you with accurate thin line marking capability. It can also be used as a gift for carving lovers. color:Silver Material:Metal Package Contents: 4 x tungsten carbide scriber 8 x marking heads 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.