Multi-Application MAPP Trigger-Start Flame Control TorchAdjusting knob for optimal gas consumption and heat output. Instant 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: 1.60 lb.