This replacement foil head and cutters are compatible with the StyleCraft Instinct Metal Edition shaver only. Specially designed for sensitive skin, the ultra-thin, hypoallergenic gold titanium foil glides over your skin for a super comfortable and close shave. 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. Superior ultra-thin stainless steel cutters with hypo-allergenic properties for smoother shaving with more audible cutting. Replacing your blades every 3-6 months gives you a better, closer shave with fewer nicks and cuts to the skin. For best operation, clean your cutters regularly or daily depending on usage by rinsing with warm water and gently brushing with a small soft bristle brush or blow out carefully with compressed air to remove debris. Make sure that all components are completely dry before placing it back onto the shaver. HOW TO REPLACE CUTTERS - Make sure your device is in the OFF position. Firmly grasp both sides of the foil head and pull away from the device to remove the head. Pull up on the existing cutter blade to pull out of the socket. Line up the new cutter with the socket and insert until it snaps into place. Replace the foil head onto the device. | StyleCraft Instinct Metal Edition Shaver Replacement Foil Head & Cutters - Black