[Practical Design]the guide tube is inclined at 30 to better fit the chain tooth mouth: the new design allows the slider to move by rotating the side button so that the grinding head firmly fits the chain tooth mouth, No need to take it all apart or replace the chain, can be applied to more complex environments and save your time. It's a very fast way to sharpen your chainsaw. The tool can make work smoother , well worth the money. [Sturdy Material]Chainsaw chain sharpener is made of anodized aluminum fixture, which is not easy to rust. The tungsten steel grinding burr is made of tungsten carbide, which is strong and durable. They than the hard steel file, and have a longer service life. Hexagonal grinding head can be also applied to electric grinding [Widely Compatible]Chain saw sharpeners work together with most 4-22 inch chainsaws and electric chainsaws, compatible with different sizes of chains. Such as .325Inch-3/16Inch, .404Inch-7/32Inch, 3/8 Inch P-3/16Inch, 3/8 Inch P-5/32Inch, 3/8Inch-13/64Inch, etc. Perfect gifts for lumberjacks, garden workers, landscapers and DIY man. [Easy Installation] No need to remove the chainsaw chain. First, fix the chainsaw blade sharpener on the rod and position the pawl on the tooth. Then, insert the chainsaw sharpener jig burr into the 30 sharpening holes, tighten the top crip, and turn the handle to sharpen quickly. Third, pull the chain after this tooth is repaired, and the blunt chain can be sharpened again Chainsaw Sharpener Bits: This is a complete tool set, perfect for cleaning and maintaining chainsaws. Own a portable carrying bag, convenient storage and carrying to the workplace. Great gift for lumberjacks, garden workers, landscapers and DIY man. Note: Before placing an order, please confirm whether it is suitable for your insaw Material: aluminum alloy colour: orange Package Contents: 1 x fixture 5 x Chainsaw Sharpener Bits (4 coarse grinding heads and 1 fine grinding head) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.