Franke soap dispenser wrench with center hole for easy install. It's compatible with Franke 119.0547.906 or similar.
https://www.franke.com/us/en/home-solutions/products/accessories/product-detail-page.html/119.0547.906.html
Wrench size is 32.
No supports, 3 and more perimeters, 15% infill, 0.2mm layer, PLA or whatever you want.
The author marked this model as their own original creation.