Osram CSLPM1.TG white flat LEDs offer a ton of throw in a tiny package! This LED gives you more throw than any XP-L HI, but with a lot more lumens than the CSLNM1.TG 1x1mm LED.
Can be used with an FET driver, but with caution. It is recommended that you only use an 18650 or smaller battery, and a 10A 18650 is going to be a better fit for this LED with an FET driver than the 15A-20A variants.
Absolute maximum drive current if kept cool is around 8A. In a smaller host, it is recommended to keep the current around 5A-6A (this can be done by using a battery with more resistance and by increasing spring/wire resistance).
7mm reflector opening centering ring available here.