- Receive 36 high-quality 2.8mm graphite refills designed for carpentry and construction tasks. This complete set helps you work more efficiently and effectively. - Our versatile construction pens can mark on a wide range of surfaces including wood, metal, glass, paper, and plastic. With 6 vibrant colors of refills, you can easily differentiate your marks and meet various project needs. - Made from non-toxic, durable graphite, these pencil leads resist breaking, ensuring that you can rely on them for consistent performance and longevity. - These versatile pencil leads serve multiple purposes: use them as an air graver, carpentry tool, dovetail knife engraving pen, or glass cutter. They are suitable for marking on walls, desks, and other surfaces, making them ideal for both professional and home projects. - Practical applications include marking cut lines on wood for furniture making, engraving precise details on glassware, or labeling items in a workshop. - Experience enhanced productivity with a tool that combines functionality and durability, perfect for both DIY enthusiasts and professionals alike.