Top Secret PDR Gray Glue this Glue was designed to stick better and hold longer designed to be used on larger tabs and larger damage.I use these on warm days, I do not recommend using below 70 degrees. These sticks measure 7/16" Diameter and 8 inches in length.I use an adjustable temperature glue gun and I am dispensing it at about 350 degrees. If you follow the directions enclosed with the sticks you will have great results. If you are a good technician you can adjust your practices and have very similar results with a high temp glue gun it just takes longer to cool enough to pull. For best hold I do not recommend using this glue below 70 degrees. If you are having problems you are NOT using it correctly feel free to contact me and I will help you to use it properly. Its not rocket science but it is common sense...