Harmo Pool Eco Heatpump replacement nut

This is a replacement for the Harmo Pool Eco heatpump nut.
The original nut of one of my contacts broke by itself after a few years and he could not find a spare part.
So I designed one in Fusion 360 and printed it. As you can see, it matches perfectly.
This design is free, but if it saved your heatpump, you can send me a tip on https://paypal.me/xavierh