ULO Optics Laser Beam-Expander Lens  Coated AR/AR 9.3μm

Model# C-BE2.0/V9

Looks to be in great condition. There looks to be water marks / residue on the lens. I'm afraid to try cleaning it and will leave that up to the buyer as I do not want to scratch it. If there are any issues with the lens you have 30 days to return it.