Double Shot keycaps with durable legends - These keycaps use a double shot process, so the legends stay clear and do not wear off. They are about 1.5 mm thick and are not backlit. Wide compatibility for many layouts - Includes a large Enter key to fit ISO layout keyboards. - Compatible with 95% of 61/64/87/104/108 Cherry MX switch ANSI mechanical keyboards. If you are unsure about compatibility, please contact customer service for assistance. 172-key customization set with versatile extras - The set includes a total of 172 keys and supplementary keys in various sizes. - Use these keys to build multiple keyboards according to your ideas, enabling flexible keyboard customization and enjoyable DIY keycap projects. Ergonomic design for extended use - Ergonomically designed cherry keycaps with a curved layout to sustain comfort during long typing sessions. - A thoughtful choice for anyone who wants to customize their keyboard without sacrificing comfort. Use scenarios - Building a custom ISO-layout keyboard for office or home use that benefits from a large Enter key and durable legends. - Upgrading or refreshing multiple keyboards (61/64/87/104/108) with a single, coherent keycap set that fits Cherry MX ANSI switches. - Long coding, writing, or gaming sessions where the ergonomic curved design helps reduce typing fatigue and improve comfort.