Professional manufacturing: This round chainsaw file is made of high hardness carbon steel, it is sharp and durable, it has strong abrasion resistance and wear resistance. Innovative design: The high precision of the process manufacturing makes each spiral cut precise on the chainsaw file clearly visible, Uniform file diameter and tooth height, for maximum cutting power and guarantees a smoother file feel.Prevents injuries: Our chain file Chainsaws feature a protective design on both ends, with a very smooth surface for safe use and no sharp edges, so you never have to worry about hurting your hand while working.Economical: If your chainsaw lawn mower is no more sharp and your chainsaw chain dull, This round metal file has an excellent sharpness and gives a new look to your chain in no time, Extend the life of your mower without having to change the chain.Wide range of applications: In addition to lawn mowers and chainsaws, For sanding all kinds of small objects, for repairing DIY products, for repairing molds, etc.