DEWALT has a well-earned reputation for designing and manufacturing many of the world's most reliable and best-performing professional-grade power tools. Now DEWALT has applied that same no-nonsense, Guaranteed Tough philosophy to its new line of heavy-duty hand tools. The DEWALT DWMT73801 mechanics Tool set is ideal for most fastening applications and includes both 3/8 in. and 1/4 in. ratchets and sockets, nut driver and bits, and hex keys.