Bernzomatic TS4000 Hand Torch Swirl Flame, Instant On Off, Preset Flame, Fixed Tip, Swirl, Hand Torch 54147566 They have a spring return They have a spring return function for ease of use and feature 1 4 in to 4 in bore diameter range for flexibility 500 psi Sensor Type Diaphragm Differentiator (HIDDEN) 452074SD02L3000BL No Low Battery Indicator No Includes Rubber Boot No Test Pressure Gauge Type Test Pressure Gauge Bar Graph 10 Segments Primary Display Range 0 to 3 Hand Torch Pressure Regulate Includes Cylinder No Tip Type Fixed Tip Handle Style Pistol Grip Inlet Connection Type NPT Inlet Connection Gender Female Heating Capacity (Propane) 255 BtuH Flame Adjustment Preset Flame