OB-1 Multitool With the functions of 14 tools, you'll rarely find a fastener you can't tighten or a beverage you can't open. The OB-1 is a single piece of Titanium, with no fasteners or hinges to come loose over time. Made out of pure 6AL4V Titanium, providing strength and extremely low weight. Every OB-1 comes with a leather strap for use as a key ring. Instead of annoying metal rings, simply tie/untie the leather strap to add/remove keys. 100% designed and manufactured in the USA