This piece will fix the rotor blades for the Wallaby 1 helicopter from Fireman Sam. My son was annoyed by the blades folding every time he was flying around. Can be printed in PLA or PETG. The sides will bend a bit to get a better grip on the rotor shaft.
This part should also work for the new police helicopter.
There is also one for Wallaby 2 in my profile.
The author hasn't provided the model origin yet.