3 Cartridges. For use with PedEgg Professional (sold separately). Use fresh blades for better results! Includes 3 emery finishing pads! Premium long-lasting stainless steel. Safe to the touch. 138 Precision micro files. Contains: 3 Cartridges; 3 Emery pads. Use a new cartridge whenever blades begin to dull. This will ensure your PedEgg gives you the smoothes, softest feet! Made in China.