This is the daughter board for the MaxM, comprising of three ultrabright LEDs and current limiting resistors. Three large 10mm LEDs combine the forces of 15 individual LED cores to create a flood of RGB light. Can be used as a replacement daughter board for the MaxM or alone for ridiculous mcd power.
Did you know - it's possible for one MaxM board to drive up to three Blasters? See this schematic from ThingM
The Blaster's trio of LEDs are 50 times as bright as a standard BlinkM and more than 1000 times as bright as a standard LED. They're so amazingly bright they kind of freak us out (and should absolutely not be looked at directly, under any circumstances!).