Choices - comprehensive selection of air and water-cooled co2 lasers with options to suit every need, oem basic- available in air-cooled and water-cooled configurations, oem integrated - available in air-cooled configuration with aluminum fan shroud - ideal for "bolt on" integration; no plumbing or chillers necessary, class iv - available in air-cooled or water-cooled configurations with key switch and shutter safety interlocks.