The SE 11-Function Stainless Steel Survival Pocket Tools (Pack of 10) have so much functionality in one pocket-sized device. Use our 11-in-1 survival tools anytime, anywhere, while biking, camping, hiking, or at home, work, or school. Use them with all sorts of activities and situations. For your convenience, simply attach this tool onto a jump/key/split ring, lanyard, etc. by using the small keychain hole (located in the corner). Take advantage of the credit card size and keep this tool inside your pocket, wallet, emergency/survival kit, or wherever you may need it. Functions of these survival tools include: -Can opener -Bottle cap opener -4-position wrench