This 1/2″ x 4” medium 600 grit diamond plate is a replacement plate for the Work Sharp Precision Adjust Knife Sharpener . This is a direct replacement to the 600 grit diamond included with your sharpener. ⚠ Not for Sale in Quebec Due to compliance requirements outlined in Quebec's Bill 96, this product is not authorized for sale or shipment into the province of Quebec. The product packaging, user manuals, and/or product labeling do not meet the French language requirements for Quebec as mandated under current regulations.