Don't let their size fool you, these are highest output T10/T15 based bulbs ever produced.
Full Cree construction and fully heat synced designed for large fixtures (3rd brake light/Reverse/City Lights)
Available in White or Red
Though optimized for larger 921 style locations, these can be used in 194 sockets (space providing)
They can get hot and should not touch any plastic lenses when installed.
Can be used for JDM style city lights and run as DRLs given their insane peak output.