Park Tool some pretty cool lifestyle "tools" for around the deck, kitchen or campsite. The BO-4 is a combination corkscrew and bottle opener complete with knife / foil cutter. Made in the tradition of our premium quality fold up tools, it folds for storage and features all stainless-steel mechanisms housed in a forged aluminum case. This is a top-quality beverage tool that will draw admiring glances from your envious guests.