this is supposed to fit 3.17 shaft--it doesn't --it is for 4mm shaft. There is no way this will ''clamp'' a 3.17 shaft.

this is supposed to fit 3.17 shaft--it doesn't --it is for 4mm shaft. There is no way this will ''clamp'' a 3.17 shaft.

this is supposed to fit 3.17 shaft--it doesn't --it is for 4mm shaft. There is no way this will ''clamp'' a 3.17 shaft.

Very good product, it arrived quickly. The propeller holder can be swapped and attached to a smaller shaft motor. I've attached the 1400kv engine. A lot of strength and speed..

Muy buen producto, llegó rápido. Se puede intercambiar el porta hélice y acoplarlo a un motor más pequeño de eje. Yo le he acoplado el motor 1400kv. Mucha fuerza y velocidad..

Very good product, it arrived quickly. The propeller holder can be swapped and attached to a smaller shaft motor. I've attached the 1400kv engine. A lot of strength and speed..