Precision metal melting as well as soldering, brazing and welding. Fingertip control of valves and selection of tips allow the user to select the type of flame required, from large brush to pinpoint. Valves work easily and surely, with precise mixing of gas and never any leakage. All parts are machined from solid brass stock and seamless brass tubing and are completely nickel plated. Overall length is 9". Inlets use standard 1/4" hose.