Doubleshot Craft: These keycaps are made of double shot craft to ensure clarity of characters and prevent them from falling off. The thickness of 1.5mm which can brings you a comfortable typing sound Compatibility: The complete set of keycaps has 172 keys, including various personalized keys. You can build 61/64/87/104/108 cherry mx switches ISO ANSI Layout mechanical keyboard according to your own ideas Profile: It adopts the classic cherry profile, providing you with a comfortable user experience whether it's typing or gaming, without feeling tired Packaging: This product is packaged in an ABS keycap tray with a tray cover, paired with a thick paper outer packaging box, which can effectively protect the keycap from scratches and stains during transportation Customer Service: This is a set of keycaps, not a keyboard. If the keycaps missing or broken, customer service will send you replacement keycaps