I really love the design, for me Monsta X will always be 7 - no matter what. However... Maybe tell customers to not actually use it on your keychain as it broke after only a few days... The 7 fell off. That was painful. It felt like a bad omen.
Like I said - I love the design! So pretty that even my colleagues and friends - who have no idea who Monsta X are, what Twotuckgom is or even like K-pop - said they want one too.