Welding Torch Flame Type Swirl Connection Type Quick Connect Ignition Type External Lighter Tip Manufacturer Model Number ST-11 Compatible Torch Manufacturer Part Number STK-11 Silver Braze Size (MAP-Pro Maximum) 3 in Soft Solder Size (MAP-Pro Maximum) 6 in Silver Braze Size (Propane Maximum) 2 in Soft Solder Size (Propane Maximum) 4 in Tip Series Extreme STK Tip Type Double Barrel Compatible Fuel Type MAP/Pro Propane Application Brazing Soldering