This replacement snap-on foil head is compatible with the StyleCraft Cordless Ace foil shaver only. Perfect for trimming and shaving short beards, mustaches, sideburns, bald heads and back of neck with its ultra-thin foil. And, because the Ace shaver is cordless, you'll have no trouble maneuvering it and getting the necessary angles to achieve your desired style. Replacing your blades gives you a better, closer shave with less nicks and cuts to the skin. Easy to clean and disinfect. For best operation, clean your foils regularly or daily depending on usage by rinsing with warm water and slightly brushing with a small soft bristle brush to remove debris.