This 4" half round smooth file is rounded on one side and flat on the other. It's suitable for use on concave and convex as well as flat surfaces. The backs of all half round bastard files are double cut, while the backs of all half round second cut files longer than 6 inches are ...This 4" half round smooth file is rounded on one side and flat on the other.
It's suitable for use on concave and convex as well as flat surfaces. The backs of all half round bastard files are double cut, while the backs of all half round second cut files longer than 6 inches are double cut. The 4 and 6 inch files are single cut, and the flat sides of all half files are double cut.