Cree Q5 tells us only the emitter manufacturer, Cree, and the flux bin, Q5. It doesn't tell us anything about the device into which the LED is installed, or even the model of the emitter.
That being said, the 2Fish LockBlock, and its generic clones, work reasonably well for mounting flashlights to bicycle handlebars. There's a lot of room for improvement, but they're the best I've yet found in five years of looking (on and off).
Last edited by Jaywalk3r; 10-12-14 at 01:52 AM.