What is the difference between bottle caps that are twist off vs non twist off. They look identical, both the caps and the opening of the bottle, so what makes bottle caps twist off?

Question

Title says it all but an example would be domestic beer bottles such as Bud Light vs imported beer bottles Dos Equis. Caps and bottles are identical so what allows the twist off to actually twist off. Dumb question but I’m curious.

In: Other

Answer 1

As someone else explained, it’s not the caps that are different, it’s the bottles. Bottles that have caps that screw on have threading on the lip of the bottle, non twist bottle simply have an edge that the bottle cap is pressed on.