Very reliable and good quality water bottle. Do not tighten cover too much or else water cannot drip for drinking. Ring clasp or spring, let me know which one you want
When you get my needle tip glass bottles, you can indicate if you would prefer a clasp ring or a spring to hold your bottle to cage. For acrylic cages, there is option of acrylic bottle holders. If your water cannot flow, you need to loosen the cover as if no air can enter the bottle, it means no water can go out. Thanks!