Recommendations for cages

I bought my first chastity cage, it came with 3 different sized rings. I bought it specifically so I could try and see which one was the best fit. The cage itself is 3.5 inches long. Polycarbonate and clear

I’m able to get the biggest and second biggest ring on (60mm and 55mm) the next size down I can’t get and it’s 50mm

The cage is 3.5 inches long and there’s probably half an inch or more of space from the tip of my dick to the tip of the cage so these past couple of months I bought a smaller cage. The store I was at didn’t have the specifications for the ring on the box. Only the length and it was 3 inches in length with I was sure I could fit into. Getting home and trying on the ring it is way too small. If I had to guess it’s about 45mm and it’s metal. The cage part fits perfectly and I’m so disappointed the ring is too small.

Does anyone have any recommendations for cages that have ring sizes 55mm and anywhere 2.5 -3 inches cage length?