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. On one end of the Doohickey is a sturdy carabineer 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 carabineer opening is strategically shaped to function as a wrench. On the other end, the Doohickey features, 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. Package measures 2" x 5½". Weighs .04 lbs.