The Klein 68511 is an open-end and box combination wrench. This wrench is made of the highest quality alloy-steel for strength and better hardenability. Each end has the same size opening of 11 mm and has an overall length of 6.5". It is also nickel-chrome plated for added durability and is corrosion-resistant. In addition, this hand tool is designed for tightening or loosening bolts, especially in confined working areas. Klein Tools is the world leader in the design and production of quality products. In cooperation with Klein Tools, we at PlumbersStock carry high-quality and reliable products for a very affordable price. Grab yours now here at PlumbersStock.