Credit Card Diamond Stone (Coarse 325 grit)
3 ¼ inches by 2 inches
Same high quality as the large ones, except the size of a credit card. Great for quick touch-ups and traveling. Use light pressure, and let the diamonds do the work for you. May be used with no lubricant. However, if no lubricant is used, the stone must be cleaned from time to time with warm soapy water and a scrubber pad or brush to remove the metal particles which collect between the diamonds while sharpening. Come in protective color-coated plastic pouch.