Ordering Description Product number Description: Smoke Master 450 Air Cooled MIG Gun (450A, 1/16, 15FT, Lincoln) Smoke Extraction Product number: 1046-1138 Description: Smoke Master 450 Air Cooled MIG Gun (450A, 1/16, 15FT, Miller) Smoke Extraction Product number: 1046-1128 Description: Smoke Master 450 Air Cooled MIG Gun (450A, 1/16, 12FT, Miller) Smoke Extraction Product number: 1046-1125 Description: Smoke Master 450 Air Cooled MIG Gun (450A, 1/16, 15FT, Tweco) Smoke Extraction Product number: 1046-1108 Description: Smoke Master 450 Air Cooled MIG Gun (450A, 1/16, 12FT, Tweco) Smoke Extraction Product number: 1046-1105