PedEgg Professional Foot File Replacement Blades - 3 Pack. This pack includes three replacement cartridges/blades for the PedEgg Professional Foot File. Use a new cartridge whenever blades begin to dull to ensure your PedEgg gives you the smoothest, softest feet. Get better results with fresh blades. These blades are safe to the touch and feature 138 precision micro files made from premium, long-lasting stainless steel. Note: These replacement blades are not compatible with newer versions of PedEgg. The set includes 3 cartridges and 3 emery pads and ships in non-retail packaging.