Fasten Nuts and Bolts of All Sizes. If you are someone who prefers to fix machinery and other equipment on your own, the 40-piece socket wrench set is the perfect addition to your tool box. Featuring 40 wrenches in different sizes, ratchet handle, spinner handle and more, this set has all the tools you need to perform tasks such as loosening or tightening bolts and nuts of your vehicle's wheels, machinery, furniture and more. Perform these tasks with ease using the superior ergonomics of this wrench set. Blow Case for Easy Storage and Portability. When you want to carry your tools around to perform easy repairs on various equipment, the wrench set's blow case is the ideal solution for easy portability and storage. This case also protects the tools from weather elements like air and water, thus preventing rusting.