Adtech Corded Cool Tool Kit

I have a project for 4th graders. i am wanting them to hot glue (cold glue) glass jewels from the dollar store on to a vase... will this work?

Why is product temperature described as 75 degrees cooler than other glue guns instead of stating actual temperature?

Cuáles son las barras de repuesto que debo comprar ?

las barras de silicona son diferentes. a la de las pistolas convecionales