Enhance the performance and extend the life of your chainsaw with this professional-grade Chainsaw Sharpener set, crafted from high-quality emery material for superior durability and efficient sharpening. Designed to deliver fine and even grinding, this set ensures precise sharpening results, helping maintain your chainsaw’s cutting edge for longer use. Key Features: · Premium Emery Material: Manufactured using durable emery, these grinding bits resist deformation and provide long-lasting performance during continuous use. · Complete 30-Piece Set: Includes three sizes of grinding heads—4.0mm, 4.8mm, and 5.5mm—with 10 pieces of each size, catering to various chainsaw chain types for versatile sharpening options. · Versatile Application: Not only ideal for chainsaw chain sharpening but also suitable for polishing and grinding wood, mold, steel, and other metal materials, offering broad usability for different projects. · Easy Installation: Each grinding bit features a 3mm (0.12in) shank designed for quick and convenient mounting on electric grinders, drills, and other rotary tools, saving time and effort during tool setup. · Optimized Sizes for Chainsaw Chains:  - 4.0mm (0.16in) grinding head fits 3/8 chains on electric chainsaws  - 4.8mm (0.19in) grinding head is compatible with small chainsaws, 325 chains, and large 3/8 chains  - 5.5mm (0.22in) grinding head suits large chainsaws with 404 chains Specifications: · Item Type: Chainsaw Sharpener Grinding Bits · Material: Emery · Shank Diameter: Approx. 3mm (0.12in) · Grinding Head Sizes: 4.0mm / 4.8mm / 5.5mm Package Includes: · 30 x Emery Grinding Bits (10 pieces each of 4.0mm, 4.8mm, and 5.5mm) This comprehensive Chainsaw Sharpener set is an essential accessory for professional woodworkers, landscapers, and DIY enthusiasts seeking efficient maintenance of chainsaw blades and other metal grinding tasks. Its high-quality emery construction and versatile sizes make it a reliable choice to keep your tools operating at peak performance.