Bosch T101D HCS electric jigsaw blades have a standard shank and are designed for use with electric jigsaws from various manufacturers. This set of files was used with a DeFort DJS-710N-Q electric jigsaw. These saws are designed to work with a variety of wood - sawing boards, tree branches, chipboard. laminate, plywood, etc. These files are not quite suitable for working with thick boards, as they do not have enough length. Almost all such files were broken when sawing thick boards, as well as when sawing thick chipboard. When sawing chipboard, if the file is overloaded, it overheats, and as a result, it may break. When sawing a thick board, the work is difficult, and when the saw blade is not long enough to cope with the board, it can break from numerous butt blows. But in general, Bosch T101D files have proven to be durable, they retain their sharp teeth well when used correctly. Bosch T101D files have large sharp teeth. Due to this, they quickly cope, for example, with a board. But the cut made by such a file is not always satisfactory in terms of quality, since due to large teeth it can have large burrs and chips. However, for any specific purposes and tasks, it is easy to select similar files with finer teeth, so this disadvantage of files cannot be considered significant. since due to large teeth it can have large burrs and chips. However, for any specific purposes and tasks, it is easy to select similar files with finer teeth, so this disadvantage of files cannot be considered significant. since due to large teeth it can have large burrs and chips. However, for any specific purposes and tasks, it is easy to select similar files with finer teeth, so this disadvantage of files cannot be considered significant. The package in which the files were sold, there were 5 of them: Back side packaging: A well-worked file with some teeth slightly dull and worn: Bosch T101D jigsaw files have proven themselves very well. The only problem with these saws is that they don't have enough length when cutting thick materials. At the same time, the power of an electric jigsaw is quite enough, and all the limitations rest precisely on the capabilities of the file. But in any case, sawing the board with the help of an electric jigsaw and such a file becomes a fairly quick and uncomplicated manipulation. True, you first need to practice to learn how to cut smoothly.