Dedso Professional Hot Melt Adhesive Glue Gun 80w with 2-Piece Glue Sticks (Black) Professional ajustable temperature hot melt glue gun adjustable temperature ranges from 100 to 220 degree celcius (212 degree F - 428 degree F), which makes the glue gun good for both hot and cold applications. Use a small flat-bladed screwdriver to spin the dial to adjust the temperature you need. This hot melt glue gun with changeable and insulated nozzle with built in leak-proof valve. The preheated nozzle and hot melted glue will be extremely hot so never touch it in any case.