Be Amazing! Toys Geyser Tube with Caps
Learn to create an enormous geysesr by combining Mentos with soda. The eruption is amazing - up to 25' high - and so is the learning if you consider the science just beneath the surface. Interchangeable caps fit on the Geyser Tube to allow various types of sprays: a single spray; a long, rectangular spray; a cross and a 3-hole spray.