Geospace Air-Powered SLAP ROCKET Foam Flying Toy, Single (Assorted Colors) A small "Slap it, Slam it" version of Geospace's popular Pump Rocket. At just over 1-foot long, it's perfectly-sized to take with you anywhere. Use the palm of your hand to slap the launcher or slam it on a hard surface. Practice your aim to send the rocket soaring -- up to 50 feet! Look for the Slap Rocket Replacement Rocket Set for even more fun!