These glue sticks are ideal for bonding heat sensitive materials to each other. These sticks are 4 inch long and are 0.45 inch round. The tools that these sticks fit into are GR20, GR25-2 and GR100. Glue sticks24 per card25 to 30 second set timeNo shelf life limit like tube and bottle gluesDualmelt Glue sticks can be used in all purpose applicationsUse in Stanley Dualmelt high and low temperature glue gunsIn high temperature glue guns the sticks are used for household repairs, carton sealing, hobby projects and much moreIn low temperature glue guns for bonding heat sensitive materials such as ribbon, Styrofoam, dried flowers and beadworkFits Stanley glue gun GR204 in.