It may not be able to ward off a bear, but this multi-tool will take down stubborn bottles, conquer aluminum cans, and slice the crap out of things that need slicing. Our 4'' tool includes a foil cutter, 3.5'' knife, can opener, bottle opener, and corkscrew. Multi-tool includes a corkscrew, bottle opener, can opener, reamer punch and 3.5" knife blade Great tool to take camping or on any outdoor adventure Total length folded up is 4 inches