In this JobSmart 172 pc. Mechanics Hand Tool Set, you'll have all the tools needed for the next job. This set contains tools forged from chrome alloy steel for superior durability and strength. With an array of ratchets, adapters, hex keys, standard sockets, deep sockets, bit sockets, and extensions bars, you'll be allowed the flexibility to take on a wide range of projects. It's a great addition to any shop, home garage, or automobile. The tool set includes the following: (42) 1/4 in. drive tools, (40) 3/8 in. drive tools, (12) 1/2 in. drive tools, (6) open end wrenches and (72) accessories.