1. 1.8 inch long and 0.27 inch diameter hot glue sticks fit most glue guns on the market. Safe to use with both high and low temperature glue guns. 2. EVA material with strong viscosity, easy operation, aging resistance and good temperature resistance. Will not harden after long-term storage. 3. Tough and versatile, hot glue sticks provide a long term hold even on hard to bond surfaces. 4. 7 mm glue sticks are used for 12W, 20W, 25W and 30W small glue guns (below 30W, including 30W); 11 mm glue sticks are used for higher wattage glue guns (60W, 80W, 100W-200W, above 60W). 5. Use scenarios: - Craft and hobby projects such as model building, home decor, and fabric mounting on wood or plastic where a clean, reliable bond is needed. - Household repairs for plastic parts, lightweight fixtures, trim, or quick, durable fixes on non-structural components. - Workshop or shop tasks requiring stronger power glue guns to assemble or secure components in woodworking, plastic, or light metal applications.