The Norton India AO Square File is ideal for a variety of applications, including dimensioning keyways to maintain fit, stoning faces on router bits, touching-up edges of reamer teeth, lapping/honing to close tolerances to produce the finest edge on precision instruments, die work and delicate tools. With the smooth cutting aluminum oxide abrasive, you can quickly produce a strong, keen, long-lasting edge and uniform finish while retaining the shape of the file. Available in coarse, medium, and fine grits for restoring edges, producing average edges, and achieving even sharper cutting edges.

Norton® India® Abrasive File, 4 in Overall Length, 3/8 in Overall Width, 3/8 in Overall Thickness, Coarse Grade, Squared, Aluminum Oxide Abrasive, Gray, Applicable Materials: Ferrous Alloys, High-Tensile Materials and Wood