Item Type: Keycaps Material: PBT Color: Rainbow Gradient Process: Dye Sublimation Character Light Transmission Number Of Keys: 108 Keys Applicable Equipment: General Mechanical Keyboard 1、108 Keycaps: Can be used with most mechanical keyboards, any keyswitch with a cross shaped shaft. Fits 108/104/87/61 key keyboards.  2、Dye Sublimation Rainbow Gradient Keycaps: Vibrant colors, stylish and cool, make your keyboard more personalized.  3、PBT Material: Made with high quality PBT material, these keycaps provide top notch durability and great typing feel, with characters that are backlit.  4、Ergonomic Design: The keycaps are easy to install and have a curved layout for long lasting comfort.  5、Clear Font Patterns: These fonts and patterns are very clear, not easy to fall off, and are common to mechanical keyboards.