The Bernard 300 amp Clean Air Fume Extraction MIG Gun is designed to allow users to reduce smoke at the source with an industrial duty frame extraction gun comparable in size and weight to a regular welding gun. This gun features a black finish on all vacuum tubes and chambers. The vacuum chamber is designed to provide good joint access and visibility, and the 360 degree vacuum hose swivel helps improve flexibility and reduce operator wrist fatigue. This gun is intended for large weldment and confined space welding applications, the company says.