Professional hot melt stick is non- and environmentally friendly. It's a perfect adhesive for other different materials,such as wood,plastic,glass,metal,stone, ceramic,brick ,toys,lace ,cotton fabric,etc Paintless Dent Repair Hot Melt is an indispensable accessory for car dent repair. It has a strong stickiness and also suitable for DIY small things,for example toys,ceramic wall,wood floor,refrigerator,glasses,phone case and some handicrafts. Yellow Glue Sticks have a strong viscosity,suitable for the relatively harder parts on cars. Black Glue Sticks are suitable for relatively soft. We have tested this glue sticks with a 40W Hot glue ,preheating time is 3-5 minutes. Stuck on tightly with about 5-10 minutes cooling time. Perfect for your car dent remove job or some home decoration job. How to use it for car dent repair: 1.Mount the into the glue and pull trigger until the is loaded into the glue , then connect to a power outlet and preheat for 3-5 minutes. 2.Select an appropriate sized puller tab for the dent. 3. Pull the trigger on the preheated glue and apply the glue to the pull tab. 4. Immediately place the pull tab at the center of the dent, gently press until the glue cures and adheres, this will take less than 8 minutes and even less in colder. 5.After pulling dent out,please alcohol on the residual glue,it will become easy to clean. colour:Yellow+black Material:Hot melt glue size:Approximately 11 x 270mm Package Contents: 10 x Yellow Glue Sticks 10 x Black Glue Sticks Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.