The Hyper Tough Folding Hex Key Set includes 3 folding tools of the most commonly used sizes of hex keys and star keys. The 9-Piece SAE Hex, 8-Piece Metric Hex and 8-Piece STAR key Sets are made of Heavy-Duty steel and designed to tighten and loosen a variety of fastener sizes. Every tool holder features a non-slip grip and shows the size of each key enclosed to eliminate guessing. The key holders are color coded for quick identification: red SAE, blue METRIC, green Star. Easier to use and store than traditional single key sets.