The Blue Stuff sticks from GREEN STUFF WORLD are a new generation of thermoplastic molding material that works by submerging the Blue Stuff in hot water for 3 minutes. It will allow you to create an instant mold of any piece you want by pressing the plastic material onto the piece from which you want the mold to be made. After that, you can create copies using any kind of putty, polyester resins, or even epoxy resins. Nothing will stick to the Blue Stuff. REUSABLE plastic molding for all levels. New improved composition that will allow you to have better details since the plastic will stay in a soft state for a longer time. - Size of each stick: 5.8 x 1.5 x 0.7cm - Weight of each bar: 6 gr.