The Nite-Ize Doohickey is a key sized multi-tool you can carry with you all the time for easy access to five indispensible tools. It includes a box opener, bottle opener, wrench, ruler, and flat head screwdriver in one compact package. Compact and easy to use, and TSA friendly as well. One end of the Doohickey has a carabiner style clip allowing you to attach it to a key ring, jacket zipper pull, or anywhere else you care to keep it handy.