Material: The chainsaw chain file is made of bearing steel, with high hardness and strong wear resistance. After a meticulous production process, it can be produced. Wear-resistant, more corrosion-resistant, durable and has a long service life. Practical tool: This round chainsaw file, Can make the chainsaw sharper, improve the working efficiency of the chainsaw and extend the life of the chainsaw, Practical tool for quick and easy teeth grinding; This round chainsaw chain sharpening file has the advantages of low noise, simple appearance and easy operation. Round File: These round chainsaw sharpening files have a round shape, a smooth cut and a straight tang. Chainsaw chain file helps improve the cutting efficiency of your chainsaw; It can effectively improve the working efficiency of the chain saw and extend the service life of the chain saw. Widely used: chainsaw chain file meets the needs of most people, ideal for woodworking and metalworking enthusiasts, ideal for carpenters and DIY projects at home, garden. Interchangeable: 6 4.0MM chainsaw chain sharpening files can meet most daily chainsaw chain sharpening tools.