two air speed welding gun 1.CE Certificate 2.temperature 50~550C 3.700W, 110V/220Vac 4.Air volume: 50-300L/Min two air speed ... welding gun Features:1, Cold/hot air,2, Adjustable temperature.3, Long life service4 ... ctn weight: 8.6kg5, Accordingly Heater: TGK-700AF6, Application: used for top trapping, plastic's recycling and repairing, integrated circuit welding ...