Universal Prop Mount v3 20mm STL
The version 3 Universal Prop Mount is a large size mount primarily designed for the big props with lots of open space. With its larger surface area and six zip tie locations, it makes more contact with the coro for increased stability on the prop. Overall dimensions are approximately 6.75 inches by 3.125 inches. (Specifically 170mm x 80mm) This version is sized to fit 20mm conduit.
For those in the UK, the link below is where you can get the conduit.
Note: This is a digital purchase for STL files and not a physical product.