Multi-Application MAPP Trigger-Start TorchInstant on-off trigger for fuel saving and convenience. Lock button keeps torch lit for finger-free use. Replaceable brass tip. Pressure regulated to operate in all directions. Cast aluminum body and stainless steel burntube for durability. Flame Type: Swirl Action; Gas Type: MAPP® (Methyl Acetylene-Propadiene); Process: Brazing, Soldering, Sweating, Melting, Heating; Weight: 1.31 lb.