RC Pilot Supply Yuneec Q500 Speedy Propeller Prop Balance Rod W/ Base They have a 6mm propeller

They have a 6mm propeller shaft which can be used with the traditional style quadcopter propeller sets

2 x Brushes

Already Pre-Glued To The Wheels - No messy glue needed

Nitro Rustler

propellers balanced with the Speedy™ Prop Balancer are a “must have” in your tool box

RC Pilot Supply Yuneec Q500 Speedy Propeller Prop Balance Rod W/ Base They have a 6mm propellerThe Speedy Prop Balancer PB 1 (patent pending) Minimizes Prop Vibration Improves Motor Life Increases Efficiency Maximizes Image Quality The importance and value of precisely balanced props: Balanced props on multi rotors are very important for two reasons. Out of balance props are hard on the motors and make them work harder. Also, out of balance props induce vibrations in the airframe that manifest themselves through the airframe down to camera