The BONDHUS Gorilla Grip Hex Fold Up Allen Key Sets Metric 7pc & Imperial 9Pc 12522 are a versatile addition to any toolbox. These hex keys feature a convenient fold-up design for easy storage and access. Crafted from Protanium Steel with ProGuard™ finish, they are built for durability and heavy-duty use. The set includes 7 metric keys (sizes 2mm-8mm) and 9 imperial keys (sizes 5/64"-1/4"). The color-coded GorillaGrip® fold-up handle is 40% stronger than steel handles. Tools are made in the USA with Bondhus proprietary Protanium® steel, offering up to 20% more strength than competitor tools. The ProGuard Finish provides superior rust protection, five times more effective than the next leading brand. This product comes with a lifetime warranty.