Nite Ize Doohickey - Multi Functional Key-Sized Tool -Made of durable stainless steel, the Nite Ize DoohicKey features a half-dozen tools that do everything from tighten bolts and screws to open a bottle of refreshment, all in a simple key tool that fits in the palm of your hand. On one end of the DoohicKey is a sturdy carabiner clip, allowing you to attach keys to it, or attach the DoohicKey itself to any loop or ring. Opposite the clip is an etched ruler for on-the-spot measurements, and the carabiner opening is strategically shaped to function as a wrench. On the other end, the DoohicKey features a bottle opener, a flat head screwdriver, and a box cutter. With a streamlined, clever design that makes it easy to carry, attach, remove, and reattach, it's always as at-hand as it is handy. Key-sized multi-tool that easily attaches to an existing key chain or strapSecure Stainless Steel constructionA variety of useful tools in a compact, easy to use designFeatures the following tools: Box Cutter, Bottle Opener, Wrench (1/4", 5/16", and 3/8"), Ruler (inches and centimeters)TSA FriendlySize: 2.6" x 0.7" x 0.1" 64.8mm x 17.2mm x 2.5mm