A set of 4 keycaps that includes 1 R3-1X1 and 3 R2-1X1 to replace your "WASD" keys on your mechanical keyboard. Choose from a variety of keycap colors. Also choose from blank or UV printed legends. Arrows are optional on printed keys. Alternatively; when changing "WASD" to "ESDF" you will receive 1 R3-1X1, 2 R2-1X1 and 1 R2-1X1 "Line" key. Fits on most mechanical keyboards with Cherry MX switches.