uto strt/stop ignition esily ignites nd extinguishes flme, Swirl flme provides hot efficient flme for lrge dimeter soldering brzing nd het treting, For best results use with MP-Pro fuel such s the Bernzomtic 14.1 oz. MP-Pro Hnd Torch Cylinder, Cst luminum body construction for durbility, Pressure regulted for consistent performnce when tilted or momentrily inverted, Run-lock button keeps torch lit for continuous use, Limited Lifetime Wrrnty, GRET FOR, Brzing, Het treting, Lrge dimeter soldering Suitble for Propylene & Propne fuel Ultr swirl high in tensity flme for 3% fster soldering time (thn TS4) Instnt on/o ff trigger igniter with simple one-hnded opertion djustble fl me control knob for ese in switching between different pplictions< li> Cst luminium body for durbility Lock button keeps torch lit for finger free use Solders 1/8 3_ (3.175 76.2mm) Copper Pipe Brzes 1/16 1_ (1.58 25.4mm) Copper Pipe,