AXYZ - 25999 Rotary Pizza Wheel Knife CartridgeThe Rotary Knife Cartridge is used with the Tangential Knife Head (part 26054). It fits rotary or pizza style knife blades. The blades are very useful for cutting heavy and tough materials, as well as highly abrasive materials that would destroy regular knife blades very quickly. The Rotary Knife Cartridge comes with one 48mm Pizza Wheel Blade (26085).