Note: The BLUE color 40mm 4 blade propellers are off the shelf. You can choose its great alternative Gemfan's 4-blade propellers.
40mm-Blade props are an available alternative to the stock propellers for Inductrix FPV Plus, BETAFPV Beta75, Kingkong Tiny 7, etc.
The diameter is 40mm. This propeller could fit perfectly into a 75mm frame with 1.0mm shaft. Like Beta75 or Beta75S.
Recommended frames that could fit these props.