The Drill Doctor 100 grit diamond sharpening wheel saves time when repairing heavily damaged or broken bits. The coarse wheel will also sharpen carbide and large bits faster, and prolong the life of your Fine Diamond Sharpening Wheel. The Coarse Diamond Sharpening Wheel fits Drill Doctor models 350X, XP, 500X, 750X, and SB. ⚠ 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.