The Sharpening kit contains everything the handyman to sharpen his saw chain needs. It remains only to hope that the owner of the chain also can handle it, because sharpening requires care and exercise. This special sharpening kit I need for my small electric saws and therefore the files get some toys and bounds ahead. The larger files for petrol chainsaws are much more solid. These small files, there is always the danger of bending them. Therefore, I can only awarded four stars.