Cool melt Docrafts glue gun refill sticks (for cold glue gun only). Cool Melt is suitable for delicate and perishable materials such as foam, polystyrene, and balloons. Full instructions included. Cool melt glue melts at low temperatures with effective adhesion. 12 full length size sticks: 7mm (0.7cm) diameter x 100mm (10cm) length. Ideal for use with 'Stick It" Craft and DIY glue gun, compatible with other standard glue sticks also. Perfect craft, hobby and DIY adhesive with a multitude of uses. Quick, clean, efficient, precision adhesive application.