Philips OneBlade Replacement Blade QP420/50 is designed for those seeking an innovative grooming solution, featuring a 360 Blade that flexes in all directions to easily adjust to the unique curves of your face, ensuring optimal comfort while providing a close and precise shave; this design promotes constant skin contact and exceptional control, allowing users to trim and shave hard-to-reach areas with just a few strokes, enhancing the overall grooming experience; each pack includes four replacement blades that are compatible with Philips OneBlade devices, making them a practical choice for anyone looking to maintain their personal care routine effortlessly; lightweight and compact, these blades are easy to store and handle, ensuring you always have a fresh blade on hand when needed. Comes in 4-piece set.