With this Philips OneBlade QP220/50 set, you'll immediately have a supply of razor blades for your OneBlade. These razor blades are part of a system in which they shave hairs with up to 200 movements per minute. This high speed means that the razor is suitable for both short and long beard growth. Other than that, the blades have a smooth coating and rounded ends, so they protect your skin and prevent skin irritation. To keep the razor blade clean, rinse it under the faucet after every shave. It's also important to replace the blades every 4 months, so that the razor continues to give you the best shaving performance. This set of replacement blades fits every OneBlade model.