P5™ Thin Turbo Mesh Bladed with Ridged Core Design THE ULTIMATE PORCELAIN/GRANITE BLADES! Ridged core design adds stability, reduces friction, and removes the debris from the cutting path thus extending the blade life! Turbo-mesh rim and new ridged core design virtually eliminates heat better caused by friction. To get the best performance: Don’t drop or jam in the cut. Don’t leave on the grinder when not in use. Don’t grind, twist or side-stress.