Replacement Diamond Carbide TipReplacement diamond carbide cutting tip. Carbide tips are not generally sharpened, just rotate them as the edge wears out and then replace the tip once all edges are used. Considerably lower cost than replacing the complete tool.Material: K10 Carbide 92HRCShape: DiamondSize: 28mm x 10mm x 2.5mmFixing Hole: 4mm For use with Charnwood TCSET4S & TCSET3S.You can see more carbide products HERE