GWS EP Propeller (DD-5043 125x110mm)These propellers are popular fitment to the UMX range of aircraft such as the Beast and Sbach 342. They are a direct to the prop holder on the UMX range.
It is possible to fit these to the Parkzone micro UM range of 1S 3.7volt powered Parkzone aircraft such as the Sukhoi SU26. To fit the UM aircraft a suitable prop adapter must be used (not included).
Here is a link to a video about fitting the props to the UM Sukhoi.