These folding hones have all the advantages of a monocrystalline bench stone in a portable hone. Excellent for steel or carbide, they make ideal hones in the shop, kitchen or camp.
The working surface of the hone is 4 3/8" × 7/8" (3/16" thick).
All will fit in the slot of chip-limitation router bits. 325x (coarse) is best for stock removal, 600x (fine) is good for knives and shears, while 1200x (extra-fine) gives the best edge on router bits.
Made in USA.