Hex Allen Key Set: Tighten and loosen all popular sizes of household, garage and DIY internal hexagon Allen drive screws and bolts Hex Key Tools for Home and Garage DIY: Assemble furniture, install fixtures and fittings, secure locks and handles, make fine adjustments and tweaks, finish odd jobs and repairs Most-Used Hex Key Sizes: 15 x Metric: 0.7, 0.9, 1.3, 1.5, 2, 2.5, 3, 4, 4.5, 5, 5.5, 6, 7, 8, 10mm Allen keys. 15 x Imperial: 0.028, 0.035, 0.05, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8 inch Allen keys Cr-V Metal Hex Shank Set: High torque Cr-V steel alloy keys with rust resistant black oxide coating and chamfered or rounded corner-edges for easy fitting and reduced wear in screw heads Hex Keys in a Folding Holder: Their short and long arms construction fits small gaps or gives extra reach. All stored in a compact case, clearly marked with sizes, that folds out for easy access Versatile Applications: Suitable for assembling furniture, adjusting household fixtures and fittings, working on bicycles and other vehicles, and adjusting fasteners on machinery and equipment