UM (Ultra Micro) Prop Saver

For my HobbyZone Sport Cub S, but I'm sure it will fit other ultra micros. Meant for 1.5mm shaft and GWS 5030, 5045, 5043 4mm bore props.

My nozzle seems to be too big to get the hole right. So WIP until I decide to try and spend time on this.

Let me know if this works for you.