Swiss+Tech ST45019 Knife Multitool with Bottle Opener Wrench for Keychain Camping Outdoors Hardware, Black Slim knife with self-locking mechanism for attaching to key rings, belt loops and more Features folding knife blade with quick release button for easy access, bottle opener, wrench and lanyard hole Flat wrench fits 7mm, 8mm, and 10mm nut and bolt sizes Made of black stainless steel One year limited warranty