Trigger propulsion device controls glue flow, which will help you save more glue sticks, with high quality and insulated nozzle. This hot melt glue gun is easy to use and is friendly in nature. It works fast and effectively giving a nice sticking experience. The glue gun is safe to use and has a comfortable design which makes it very easy to use. The power button is very convenient to use. Heats up in 3-5 minutes and maintain constant temperature automatically. Best for home, office and school DIY crafts projects. This glue gun works on various materials including metal, wood, glass, card, fabric, plastic, ceramics and so on. Note: Please read the instructions carefully, present at the back of the product package, before using.