Kubota water separator wrench

I tried to drain water separator on my Kubota KX018-4, but I couldn't get the nut / ring to loosen by hand. I had to get pliers, but there was a risk of damaging the nut. So I designed a wrench that I can use to loosen the water separator nut beautifully. It fits perfectly and the nut is easy to loosen.

I tried to print the key from PLA and it works, there is no risk of breakage. To be safe, I added 100% infill layers to the middle of the model. That's why a yellow rectangle appears in the middle layer in Bambu studio - it's a 100% infill modifier.

This model should fit another 147 Kubota machines, where the same nut is used, see https://www.messicks.com/parts/kubota/1g311-43590.