Which lights can take 20mm boards?

If i buy some of those Sinkpads, what light can i put them in, i want cheap, good quality and simple installation, of course i’m sure that i’m dreaming that i can get all that but please toss out the suggestions
All reflector types are welcome, but a flooder or zoom would be nice since i already have a thrower

Hi,

you should try Ultrafire C2 ( on the right ) Pill is compatible with most C8-style flashlights

Reflector is less deeper and gives more flood than c8

Will this light take the 20mm board?
http://dx.com/p/ultrafire-c2-diy-cree-led-flashlight-shell-casing-complete-set-with-driver-pill-1-18650-2-cr123a-15946