Hyper Tough 22-Piece Combination Wrench Set includes both standard Metric and SAE sizes and adds more functionality to your workshop or garage. Each piece is made with durable chrome vanadium steel with nickel chrome-plating for added durability & strength. Sizes are etched on, making reading and identification easier, and all pieces meet ANSI/ASME standard of safety and quality. This wrench tool set comes packaged in a nylon roll-up case for convenient storage and portability. It's simple to work with for your convenience. The slim size makes the wrenches easy to handle for confident work.