Disclaimer: This product is not an original item but a third-party manufactured chainsaw sharpener. Chainsaw chains naturally wear down with use, requiring regular sharpening to ensure optimal cutting performance and a safe, ergonomic working experience. Key Features:: Easy to Use: The chain saw sharpener boasts an ergonomic shape and excellent file positioning for effortless operation and precise guidance. It provides a sharpening angle of 30°, delivering optimal sharpening results with ease. Efficient Design: The filing clamp, made of solid steel, serves as a portable vise for sharpening saw chains on the job. It can be hammered into a tree stump or trunk, ensuring the guide rail is firmly fixed, preventing the chainsaw from slipping during sharpening and resulting in better sharpening outcomes. Precise Positioning: The device offers the flexibility to change from sharpening the right to the left tooth without any conversion work required. Simultaneously, it sharpens the saw teeth and adjusts the depth gauge, further enhancing the efficiency of the sharpening process. High-Quality Materials: Crafted with high-quality materials, our chainsaw sharpener ensures durability and long-lasting performance. Advantages of the Classic Line:: Optimum combination of service life and stock removal rate Aggressive filing for quick sharpening How to Select the Right File Diameter:: Chain pitch is determined by measuring the distance between any three consecutive rivets and dividing the result by two (point of reference is the middle of the rivet). The dimensions are given in inches. File Diameter Calculation: Chain Pitch - File Diameter 1/4" P - 4/32" (3.5mm) 3/8" LP - 5/32" (4.0mm) .325" - 3/16" (4.8mm) 3/8" - 13/64" (5.2mm) .404" - 7/32" (5.5mm) Remember, keeping your chain saw compatible with sharp with our chain saw chain grinding fixture will significantly enhance its performance and lifespan. Invest in our 2-in-1 chainsaw sharpener for effortless sharpening and a safer, more efficient cutting experience. Ergonomic design for easy handling and precise sharpening Provides a sharpening angle of 30° for optimal results Solid steel filing clamp acts as a portable vise for on-the-job sharpening Can be hammered into a tree stump for stability during use Allows for quick switching between sharpening right and left teeth