CNBTR Diamond Coated Flat File Medium Filing 8 Inch 180 Grit File Use for Do Delicate Jobs Diamond coated with 180 grits. Handle Size: 90x18mm/3.52"x0.7"(LxD). With the plastic handle, are comfortable for handling. They are not heavy-duty they would never do for large or rough work, but these are very small delicate tools for very small delicate jobs. Since these are small 180 grits files, debris can quickly build up on the surface and you can clean them easily and they seem like new again They are very good for removing burrs and small filament bits.