10 inch knife bastard file at 254 mm. Tapered knife edge for stock removal in narrow slots and acute-angle joints in fabrication and industrial maintenance work.
10 inch flat bastard file at 254 mm. Larger coarse-cut file for heavier stock removal in fabrication and industrial maintenance work on steel components.
Mill bastard file at 6 inches, 152 mm. Single-cut tooth pattern used for sharpening lawn mower blades, saws, and draw filing in fabrication and shop work.