Steve Spangler Geyser Tube® $9,99 favorite_border Steve Spangler Science® Steve’s famous Mentos Geyser Tube A soda eruption that can go 30 feet into the air The Deluxe version comes with 3 additional caps to change the eruption shape Simply pull the pin to release the Mentos, and run for cover See at Discountschoolsupply See all Science
