The package includes :129 keys and a key extractor. It does not include a keyboard.Compatible with: Mechanical switch games Cherry MX, Kailh Box, Gateron, Outemu.XDA profile :XDA profile is lower than Cherry profile and OEM profile. The surface is much larger than a normal surface. All keys are the same height, make sure it fits your usage habits before ordering.PBT Dye Sublimation: With high-quality PBT keys and an oil resistant coating, these 129 key keys provide superb durability and excellent writing feel. Advanced sublimation technology makes the pattern will not fade.Anti-fading: the keys sublimate PBT, the color has penetrated into the key cover, the service life of up to 10 years will not fade, you can rest assured to use, enjoy the design of the keys.