4" glue sticks are 4 inches long and have the standard 7/16" diameter for use in glue guns that that take this standard size stick (including Crain No. 203, No. 204 and No. 207 Glue Guns). They come in a resealable heavy-duty clear plastic bag for storage in the tool box. Each bag includes 8 oz. or 24 sticks. Melted glue temperatures from the glue gun are very hot, up to 400°F. Users should avoid contact with hot melted glue and keep out of the reach of children.