Features of the Hot Devil Trade Map Twin Torch Kit are as follows: Auto ignition Solid brass internals Brass adjustable burner tube Hardened ABS handle for heat & impact resistance Swirl flame action transfers heat up to 40% faster Anti flare feature Ignition lock on/off Adjustable gas flow Burn temp 2050ºC CGA600 thread This Kit is ideal for: Silver soldering Thawing frozen pipes/locks Loosening rusted nuts/bolts/screws Brazing copper/mild steel/aluminum Soft soldering & delicate applications Heat shrink General heating applications