Incredibly strong and versatile, Gorilla Hot Glue Sticks provide a long-term hold even on hard-to-bond surfaces. The clear adhesive works with high- and low-temp glue guns and features an extended working time for convenience for all types of projects. Gorilla Hot Glue is also weather resistant and incredibly durable, keeping your projects safe from seasonal temperature swings that can cause other glues to fail. Instructions: 1. Use low or high temperature glue gun, per glue gun instructions. High Temp: Use with high hemp guns for a strong bond: wood, plastic, metal, glass and more. Low Heat: Use with low heat guns for delicate surface materials: floral, fabric, foam, jewelry, and more. 2. Test the product before its intended use. Working time depends on the amount of glue applied and the temperature of the glue gun. Full size sticks are 0. 44 inches. Diameter and mini rod size are 0.27 inches. Diameter: Mini-size sticks are to be used in mini-size glue guns capable of dispensing 0. 27" in diameter. Full size sticks are to be used in full size glue guns capable of dispensing 0. 43 in diameter sticks. Click on the Gorilla link at the top of this page to see other quality products from the Gorilla Glue Company.