Craftsman 165 pc. mechanics tool set provides all the tools needed for a professional mechanic and is great for the do-it-yourself mechanic at home. This mechanic’s tool set contains most everything needed to tackle repair jobs. The tools are made of durable, alloyed steel and manufactured with quality and precision that Craftsman is famous for. The variety of tools include sockets in three drive sizes, ratchets in each drive size, extension bars, universal joints, nut driver and screwdriver bits, magnetic bit wrenches and hex keys. The Craftsman 165 pc. tool set has tools in both standard and metric sizes. The tool carrying case is has a special compartment for each tool so all the tools are neatly organized and easy to reach.