The glue guns illustrated are powered by butane gas, as used in cigarette lighters and all models feature full-hand triggers for comfortable glue dispensing. Alternative nozzles and gun stands are available for some models. Expertise gathered over more than 30 years is built into TEC glue guns for dispensing TECBOND® low melt and hot melt adhesives on demand. Solid glue sticks that are non-toxic, clean and easy to handle are heated in these lightweight hand held glue guns, applied molten to one surface to create an instant bond when both surfaces are pressed together. Continuous dispensing, within the capability of the chosen glue gun, is possible because an additional glue stick needs to be loaded before the gun completely empties. Nothing is wasted as unused hot melt glue cools and solidifies in the gun and can be reactivated when next required.