The MT-30 is a Master Microtorch® gas-powered self ignition Soldering Iron features butane-powered, eliminates the need for external fuel tanks, costly piping or unsightly hoses. Built-in self-igniting system with safety lock that ensures the switch is not turned on when not in use. It is suitable for institutional, scientific and dental laboratory applications, including shrinking tubing and specialty connectors, heating and spot drying materials, heating wax and jewelry repair.