Advanced formula technology eliminates the nuisance of messy glue strings. Creates a precise clear bead with all the bond strength needed to easily adhere a variety of materials. Glue sticks are formulated as all-temp to work in any temperature gun currently available. Added safety features for maximum use include an insulated nozzle for safeguard against burns a safety fuse that shuts the gun off automatically if overheated and built-in lifts on both sides of the gun allowing the tool to rest safely on its side without glue backup. All guns are designed with a trigger-fed mechanism to provide continual glue flow. Use high temp gun setting to bond materials such as wood plastic and metals. Use low temp gun setting for more delicate materials such as silk and foam. This gun is dual temp allowing user to use high temp or low temp settings. 20W.