Adtech's multitemp hot glue sticks can be used in just about any full-size glue gun and are crystal Clear - so Clear you can read text through them! adtech glue sticks are perfect for just about any craft or DIY project where strength and almost-instant curing time are desired. Non-toxic too! adtech's multi-temp 200 formula is trusted by crafted and DIYers more than any other glue stick. Use in your high or low-temp glue gun and expect superior results!formula 220 is a Clear, all-purpose adhesive capable of bonding many Plastics, wood products, fabric, leather, foam, PVC, polycarbonate, paper, ribbon and aluminum as well as some Polyolefin.