Hand cut and polished natural hard waterstone. This stone will NEVER wear out, and is the stone I use to go from bevel set to final polish on a new, never sharpened 65HRC knife. Finished to a coarse/medium grit on one side, and a fine/ultrafine grit on the other, this stone was designed to be a one stop shop for blade maintenance.
Grit range is approximately 1000 to 8000 plus, depending on pressure and the side used.
Dimensions are approximately 7.5″ x 2.5″ x 1″.