Tungsten carbide files are amazingly sharp and leave an incredibly smooth finish. They are more costly than a standard file but the cost is partially offset by their longevity, they stay sharp a good long time.
3213 features one Tungsten file per side and one aluminum oxide stone per side.
The tool leads with an aluminum oxide stone, followed by the file, this helps remove burrs which could potentially damage the file.
The aluminum plate measures 25mm x 70mm.
Designed to fit any tool that will accept 70mm inserts, like the MTK 701 or use with any fixed-angle side bevel guide.