Description Material:Emery grinding head + Aluminium alloy Grinding head: 4/5/6mm Suitable for: most chain saws and electric saws [Quick sharpening] Sharpen your chainsaw quickly without removing the blade from the chainsaw. [Precision Positioning] Pull the chain forward to grind the next tooth and repeat the process. [Wear Resistant] The chainsaw chain sharpening jig is made of high-quality stainless steel and alloy, wear resistant, durable and not easy to rust. It is suitable for most chains on the market, and can sharp your chains easily and quickly. [Widely used]This portable chainsaw sharpener is a must-have for any woodworking toolbox. Use the chainsaw sharpener to keep your chainsaw as sharp as new. .