- Used on concave, convex and flat surfaces
- Rounded on one side, flat on opposite
- Backs of all half-round bastard files are double-cut
- Backs of all 4 and 6" files are single-cut
- Backs of all half-round second-cut files are longer than 6" are double-cut
![Crescent Half-Round Files, 12 in, Bastard Cut, 1/EA #05094N Crescent Half-Round Files, 12 in, Bastard Cut, 1/EA #05094N](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/265496/463449/183-05094N__84025.1678731303.jpg?c=2)