General description This portable hand crank chainsaw chain sharpener is designed for quick and efficient sharpening of electric chainsaws. It allows you to sharpen your saw chain in just 3-5 seconds, restoring it to a sharp condition and eliminating passivation. The sharpener operates without a power source, making it convenient for outdoor use. Technical specifications Dimensions: 8.5 x 2.6 x 5.7 cm Material: Aluminum alloy and stainless steel Sharpening holes: 2 holes at 30 degrees Includes: 3 replacement grinding heads Compatibility and accessories Compatible with various chainsaw designs, including 14", 16", 18", and 20" chains Suitable for 1/4" and 3/8" chainsaws Installation Fix the position of the chainsaw as needed Rotate the handle to sharpen the saw chain Usage Pull the chain to ensure precise sharpening Easy to use like a pencil sharpener