64mm Shower Flange

I bought a new shower head and it did not come with a new flange. I looked on amazon and they are $8 or more when it is such a simple shape to make. So I took some measurements and threw this together in tinkercad. I believe this should fit most 1/2"-14 NPT extension arms like mine. I printed using smooth build plate and it gives a nice finish for my shower. Outer diameter is 64mmInner diameter is 21mm This is the extension that it is fitting perfectly over. https://www.amazon.com/gp/product/B09V5DQYJC