This is a replacement ParkZone Prop Adapter, and is intended for use with the ParkZone S.E.5a.
Wednesday, Jun 4 2014 (about 6 years ago)
ParkZone Prop Adapter (S.E.5a)
As I am not familiar with the (S.E.5a) it would be handy to know the size in mm. of the collet so that if it would fit a particular mtr. I would know to buy or not to buy?