Pain is a hand-sculpted artisan keycap made for mechanical keyboards which can be used as a replacement for any key. It is designed to fit comfortably in the escape row on cherry keysets and should work with any MX style switch.
Unlike most keycaps, Pain features an opening in the back left allowing you to string it from a keychain, a necklace, a bracelet, or anything else you like.
If you're curious about the sculpting process and seeing how it's evolved over time you can view progress shots here.
This Listing is for the colorway "Rave Night" which features an off white marbled top layer backed with a black base. When exposed to UV light the white will shift to seven different colors and will return to off white within a few minutes. Long term exposure to UV , such as leaving it outside for a few weeks, may cause the colors to no longer transform.