Nite Ize Doohickey Key Tool Stainless Key-sized multi-tool that easily attaches to an existing key chain or strap Secure Stainless Steel construction A variety of useful tools in a compact, easy to use design Features the following tools: Box Cutter, Bottle Opener, Wrench (1/4", 5/16", and 3/8"), Ruler (inches and centimeters), and Flat Head Screw Driver TSA Friendly