Versatile Compatibility: The chainsaw sharpening kit includes three different sizes of sharpening bits - 5/32 inch (4.0mm), 3/16 inch (4.8mm), and 7/32 inch (5.5mm). This ensures compatibility with a wide range of chainsaw chain sizes and types. Ideal for electric chain saw, small oil chainsaws, large oil chain saw and more. High-Quality Material: Each sharpening bit in the kit is made of and high-quality Titanium plating. It offers excellent polishing and filing effects, making it reliable and reusable. The sharpeners are sturdy, , and to breakage, bending, and fading. Ensuring long-lasting performance. Ample Quantity: The titanium plated burr stone file includes 40 pieces of each size of sharpening bit, with 120pieces in total. This ensures that you have enough sharpeners for multiple sharpening sessions, as well as replacements. You can also share some with your friends or family. Easy to Use: The chainsaw sharpening bits are designed to be user-friendly and easy to use. They can be easily attached to compatible with sharpening tools such as a chainsaw sharpener without the need to remove the chain. The clear and concise instructions make the sharpening process hassle-free., Manufacturer: Akfldms