An air propeller can be used to make fans, air oars, boats, wind turbines and other models that can use propellers Technical data: Mounting hole diameter: 1.9mm - tightly fits 2mm shafts Outer diameter: 80mm https://elecena.pl/product/22626538/3-blade-air-propeller-80x2-mm-for-diy-models-orange 2023-02-23 https://elecena.pl/product/22626538/3-blade-air-propeller-80x2-mm-for-diy-models-orange 2025-10-28