https://www.simondssaw.com/product-page/blk-maxi-sharp-knife-file-bastard-american-8-in
Blk Maxi-Sharp, Knife File, Bastard, American, 8 in | Simonds Hand Files
The 8-inch Black Maxi-Sharp Knife File is designed for aggressive material removal and precision sharpening in metalworking and tool maintenance applications....