You will need a ½" steel pipe, a click pin, a washer, and some push lawnmower wheels with a ½" hub center to complete it.
As of 3/29/23 I have not actually tested this design on my T40. I keep forgetting to bring it with me when I go out to spray. I will say my original design that was permanently attached worked great for moving the drone but the T40 does not like landing on wheels and it gets a little wild.
Use PETG or ABS with 6 vertical layers for this print as it needs to be a little flexible so it can snap over the landing skids. I will make updates as I test it myself and get feedback.
The author marked this model as their own original creation.