Adapter for common M24x1 thread. Three models. One for 12mm hose, one for G3/8" female thread and one for 1/2" female thread. Choose what you need. Hex spanner size is 24mm.

Yes this might be suitable for faucets, but read below and check your regulations and think again what you're might be thinking to use these for.

Critical note: If you're planning to use one, you should know that these kind of adapters should never be used if there's possibility of hose end shutting off flow in certain cases. Ie. faucets with mixers aren't meant to withstand blocking pressure ie. pressure washer, garden hose with on/off sprinkler head etc. In many countries regulations are definitely against these kinds of adapters, even though they're commonly available. One of the main reasons is that if flow is blocked after faucet end, there aren't backflow restrictors at correct place which could lead to water flowing to cold/warm side wrong way. Faucets aren't generally meant/designed to be blocked. This could lead to severe hygiene issues too if you don't understand reasons! This could be ok to use in certain situations where there would be ie. only cold water available

Only use these if you know what you're using these for and where they're ok to use and if you don't fully understand reasons and regulations, don't use these at all. Also be aware that these could burst broken under pressure. Use at your own risk.