Water tap hole reducer (35 - 32mm)

While installing a bathroom tap, it kept tilting forward as I tightened the screw—super annoying. So I designed this reducing ring to keep it straight and secure. 

It adapts from 35mm to 32mm with a 10mm height. 

I also added an extra ring under the rubber seal because the sink hole was slightly tapered, and the original rubber wasn't thick enough to sit snugly between the tap and the sink surface.