Listing is for a single 9mm 4W NUBM07 465nm laser diode mounted in a 12mm x 30mm copper module with thermal back half, leads added and a three element glass lens.
This diode is an amazing shade of blue and is capable of over 4W output when using a G-2 lens and 4A current with proper heatsinking.
Save yourself the headache of pressing and soldering. Just add heatsink and driver limiting the current to 4A or less. Suggest 3.5A. Diodes
are current hungry and as they heat up their internal resistance is
lowered causing them to want to draw more current. Don't attempt to
connect the diode directly to a fixed voltage source like a battery. You
must use a laser driver limited to no more than 4A to power this diode.
Suggested Driver
SXD Super X-Drive Laser Driver
Here is what you get. One 9mm 4W NUBM07 465nm diode mounted in a 12mm x 30mm copper module with leads and three element glass lens.