Features: Experience efficient sharpening with our diamantine grinding heads designing for electric chainsaw chains, enhancing your work efficiency and ensuring optimally cutting performances. Crafted from high quality diamantine materials, these grinding heads boast exceptional wear resistance, prolonging their lifespans and reducing the need for frequent replacements. For professional forestry workers, gardening enthusiasts, DIYer hobbyists, and repair service provider who require consistent chainsaw maintenance. Perfect for forestry operations, garden care, outdoor camping, and woodworking workshops, ensuring your chainsaw chain remain sharpness and ready for any cutting task. With a lightweight designs and easy installation process, these grinding heads offer convenience and safety, making them a essential tool part for maintaining your chainsaw's best condition. Specifications: Component:Emery, Alloy Handle diameter: 3mm Grinding head diameter: 4mm, 4.8mm, 5.5mm Color:Gold/Silver Package Includes: Pack Of 12 Diamantine Grinding Heads note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.