17PCS File Set are made of T12 Alloy Steel, comes with 4PCS Flat/Triangle/Half-round/Round Large Files,12PCS Needle Files and 1 Scratch Brush. It also packaged with a portable case, the ergonomic handle design can make a perfect polishing cutting and shaping. They are suitable for DIY lovers and carpenters.
1, Please don't stack the files with other tools.
2, Please always remove debris from the surface of the files
3, Please don't use too much force to avoid breaking when using the needle files.
4, Do not use a new file to rub the hard metal with a hardness greater than HRC55.
5, Please use one side of the file first, then use the other side when the surface is blunt.
6, For the forgings that with hard or sticky sand, they must be ground on the grinder before they can be rubbed by a file.