Use this 120 grit silicon carbide water stones for coarse sharpening and removing large amounts of metal quickly. Unmounted 120 grit sharpening stones must be mounted to a "stone blank" (sold separately) to be utilized with the Edge Pro sharpening systems. Customers who go through many coarse sharpening stones can remove their worn out coarse grit knife sharpening stones from the existing stone blank and mount their un-mounted stones themselves saving a fair amount of money. EdgePro suggests mounting these silicon carbide sharpening stones using 3M's Super 77 adhesive spray.
Please note that unmounted stones are very thin and so very fragile. We wrap them carefully in bubble wrap so they'll make it to you in one piece, but you must exercise extreme care when unwrapping and mounting them. We are not responsible for broken or cracked stones after they reach you.