Material : Made with premium emery heads, our diamond chainsaw sharpeners deliver exceptional performance. They provide smooth and even polishing, excellent for fine carving and are durable enough for reuse, ensuring durability and longevity. MULTI-PURPOSE APPLICATION - For a wide range of applications from metal polishing to chainsaw maintenance. These stone files for grinding burrs are also perfect for polishing and carving details on materials such as jade, ceramic, glass, and cemented carbide. VERSATILE SIZES - This set includes different sizes designed for different types of chainsaws: 4mm for electric saws, 4.8mm for small chainsaws and 5.5mm for large chainsaws. This variety ensures compatibility and efficiency in maintaining various sharpening needs. ENHANCED DURABILITY AND EFFICIENCY - Replace traditional files with our diamond sharpener that revitalizes chainsaw blades quickly without removing the chain. This method not only saves time but also prolongs the useful life of your chainsaw thanks to sharp and wear-resistant properties. COMPLETE SET - This package contains 21 pieces in total, with pieces of each size (4mm, 4.8mm, and 5.5mm). This extensive set provides ample spare parts for various sizes and fits different uses in your workshop or at home., Manufacturer: Bumdenuu