Replacement Foil & Cutter Bar Assembly Wahl foils are made from the highest quality hypoallergenic gold; the ultra fine foil enables a 0.1mm cutting length. Only the lightest pressure is needed for an ultimate super close cut and bump-free shave Designed for the closet shave possible without being painful or irritating, the replacement package includes hypo-allergenic gold foil which prevents bumps and cutter bar assembly for a like-new shaver. Easy to replace for easy cleaning and for a quick change for consistent close cutting and shaving.