YHFBOOX full size hot glue sticks, superior adhesion, even melting, smooth distribution, hold stronger, longer! hot glue sticks 5/16"D full-size package with 30 transparent glue sticks, 5/16"wide (1.1cm), 7" long (18cm) Environmentally friendly, non-toxic, no harmful substances to the human body during operation. Hot glue sticks work with both high and low temperature glue guns and feature an extended working time for great convenience for all types of projects Can be used on wood, metal, glass, cardboard, paper, cardboard, synthetic materials, etc. Caution Before using the hot melt glue stick, make sure the adhesive surface is free of water, dust and oil for best results