This Bottle Opener Keychain is the perfect accessory for anyone who loves to entertain. It's small and lightweight, so you can take it anywhere you go. The opener is made from durable stainless steel and features a sleek design that fits comfortably in your pocket. With this keychain
From Wikipedia
A bottle opener or bottle cap opener is a device for removing metal bottle caps from glass bottles. More broadly, it could include corkscrews to remove cork or plastic stoppers from wine bottles.