To understand the benefit of a tapered width file, imagine easing the sides of a housing joint (dado). The tapered blade will sit on its side in the bottom of the groove, keeping the handle out of the way and allowing you to work long lengths - functionally it's the side to side equivalent of a cranked neck.
- Width: 5mm - 20mm
- Cutting length: 175mm
- Chemically polished teeth
- Cuts on the push stroke