You buy in the store

https://www.mn-modelar.com/znacka/77propeller

https://www.modelshop.sk/building-jig-802-stavebny-stojan-300mm-x-210mm

https://www.aviationmegastore.com/en/modelling/building-jig-size-medium–300-x-210mm-propeller-77-prp802-197812.html

Model building Jig is designed for use in assembly of models, painting and transporting. Helps set proper dihedral and align the model symmetrically. Also acts as a convenient holder for painting your kits and be used to transport kits safely with tie downs or rubber bands

The color of the cubes may vary

Dimension 300 x 210 mm