A multi tool is only useful if it's accessible when you need it, and what's more accessible than your key chain? Weighing in at just one ounce, the durable stainless steel DoohicKey ClipKey is pound-for-pound the most useful thing to carry on your everyday key chain. This mini multi tool clips easily to your key chain, backpack, or anywhere else handy, and offers problem-solving all day with its screwdriver head, scoring point, serrated edge, and of course, bottle opener. All the DoohicKey products are travel and airport friendly, and because of their endless uses, are endlessly useful!