JellySTEM Kits

BottleBoat - Jet Propeler & Airfoil Rudder All about the JellySTEM BottleBoat with the propeler in “air tunnel” and the airfoil rudder. BotteBoat - Propeler & Simple Rudder All about the JellySTEM BottleBoat with one propeler and simple rudder. BottleBoat - Dual Propeler without Rudder All about the JellySTEM BottleBoat with dual propeler and no rudder.