Ready, Aim-Fire! This powerful air cannon will blow out a candle at 10 paces. Perform the “William Tell” demonstration as you knock a foam cup off a student's head from across the classroom with a blast of air. Have fun as you teach about air pressure, Bernoulli's principle, and fluids. Rugged plastic design. Color may vary. Safety note: No physical projectiles fire from the Airzooka. Only a soft “ball” of air, in the form of an air vortex, shoots from the end of the air cannon.