Features: This set of 12 hand cranked chain sharpeners, complete with nuts, offers a comprehensive range of sizes (4mm, 4.8mm, and 5.5mm) to ensure your chains are practical, enhancing performances and longevity. Crafted from durable diamonds grits material, these sharpening heads provide efficient grinding for various chain sizes, making installation quick and easy with the included nuts. Ideal for cycling enthusiasts, motorcycle riders, and professional repair technicians, this tool is designed to meet the needs of both hobbyists and experts alike. Perfect for use in homes garages, professional repair shops, or during outdoor riding maintenance, ensuring your equipment is always in top condition. Enhances your toolkit with this versatile chain sharpener set, a must have for anyone looking to maintain their chainsaw or bike chain with accuracy and ease. Specifications: Component:Emery Length:Approx.48mm/1.88inches Width:Approx.4mm/4.8mm/5.5mm(0.16inches/0.19inches/0.22inches) Package Includes: 12Pcs/Set Chain Sharpener Heads with Nuts note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!