Metric fasteners are a part of everyday life for most mechanics and automotive hobbyists and the Craftsman professional 9 piece metric combination wrench set makes the easy to manipulate. These wrenches feature long handles and a single-piece construction for outstanding leverage even on tough bolts. The long pattern on the open head makes it easier to reach bolt heads in tight or otherwise inaccessible areas. A box end on each wrench lets you choose the best option for maneuverability for every bolt. This professional 9 piece metric combination wrench set consists of nine of the most common metric sizes, ranging from 8 mm to 18 mm. High-quality construction gives a snug fit on each bolt, making it easier to manipulate without slipping or rounding out the bolt. Each wrench is made from tempered steel alloy for heavy use without cracking or breaking. A full polish finish keeps the set looking professional while guarding against corrosion.