Each design is cut from 12ga 304 stainless, so it'll outlive you. That can make it a family heirloom. They've been extensively tested on American and Import bottles, and they work flawlessly. Make this your 37th piece of flair, and create envy among your buddies as you casually pop the top on your favorite beverage after a long and productive day in the shop.
Insider note - the keychain end of the Hey Y'all opener is exactly one inch across in case you need to take some field measurements. That makes it a multi-tool.