Cool melt Docrafts glue gun refill sticks. Cool Melt suitable for delicate and perishable materials such as foam, polystyrene, balloons Full instructions included. Cool melt glue melts at low temperature 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.