This foldable, pocket-size Hex Key Set has 5 sizes of SAE hex keys. The set includes 3/8 in., 5/16 in., 1/4 in., 7/32 in., 3/16 in. sizes to accommodate a variety of assembly and disassembly jobs. Each of these hex keys are constructed of durable chrome vanadium steel inside a chrome steel handle. Find the right sized hex key quickly with this compact set!