This mod replace the original file of your CowanSim H125 blades.
Install:
Unzip the file and open the readme file.
1 - Choice the option that you want, open the image to see the type of blade the file contains.
2 - Copy the file "cowansim-h125 Rotor" and paste inside your community folder.
Advise: Do not use two types of blades, choice only one. This file works only in the liveries that do not have a preset of blades, if u have a livery installed in your msfs2020 that already have a blade file installed, then it'll not work in that liverie.