The waiter's friend corkscrew is the most popular wine bottle opener, whether for home use or in a bar/restaurant. The key features of this type of corkscrew are that they’re lightweight, durable & strong, but more importantly, they can easily fit into your pocket when folded. Lots of sommeliers around the World use a waiter’s friend, not only because of the above, but most incorporate a foil cutter & beer bottle opener in the design.