Popular with Woodturners, these diamond hones are small enough to fit in your top pocket and always be available for use. Made by DMT of superior Monocrystalline Diamonds these hones will last longer and stay flat. They can be used dry or with water as a lubricant. Each hone is supplied in a color coded plastic pouch, with red being fine and green being extra fine. Each hone measures 3.25" x 2" x .05" thick.