This 600x (fine) file has all the advantages of a monocrystalline bench stone in a portable hone. Excellent for steel or carbide, it makes an ideal hone in the shop, kitchen or camp.
The file measures 4 1/2" × 3/4" (1/16" thick). While it will fit in the slot of chip-limitation router bits, it is best for saw tooth bits or other bits with restricted access teeth.
Made in USA.