This multi-functional tool is small and light enough to hang off your key chain and extremely useful with a half dozen functions.Made of durable stainless steel, the DoohicKey does everything from tighten screws to open a bottle, to measuring things and being a box cutter. A sturdy carabiner clip allows you to attach the doohickey to your keys or attach it on its own to your backpack.The DoohicKey features an etched ruler, bottle opener, flat head screwdriver, multi-gauge wrench, carabiner, and a box cutter. Its an all-around clever design that makes it easy to carry, attach, remove, and reattach. It's always as at-hand as it is handy.Features:Key-sized multi-functional tool easily attaches to an existing key chain or strapSecure stainless steel constructionCompact and lightweightEasy- to-use designFeatured Tools: Box cutter, bottle opener, wrench (1/4", 5/16", and 3/8"), ruler (inches and centimeters), flat head screwdriver, and carabinerSpecifications:Dimensions: 2 5/8”L x 11/16”W x 1/8”HWeight: 0.4oz.