All glass sealed laser tube with cooling jacket, aligned mirrors and ready to use. Full spec brand new 600 mm long, 10.6 microns, beam size <1.5mm, divergence <1mrad, voltage 20kv at 15 ma. Just hook up water and power and burn away. Includes all instructions to operate.

Note: This tube is included in the LABURN20 kit and assembled laser, so it is not required to purchase separately if you are buying the LABURN20 or 2K. But it’s available here if you need just the tube itself, for building your own design or as a replacement.

This item is also called the CO2TUB2 in the Evil Genius book, Chapter 8.