Clutch mechanism prevents glue backup. Built-in drip tray/stand. Interchangeable nozzle. Check valve controls glue flow. High volume melt chamber for fast and steady even application. Solid state P.T.C heating system develops heat quicker and holds temperature for smooth consistent bonding. Design keeps heat flow away from handle so it does not get hot. 120VAC, 40W. U.L. Listed, CSA approved.