Craftsman's figure eight wrench has a quick change, multi-fastener top and bottom that accommodates eight different sized bolts in one tool, allowing the user to work on a variety of projects on the go. Each box end handles two bolt sizes and each end has two box ends that swivel, allowing the user to cover four bolt sizes on each end of the wrench. The box ends boast a universal tooth design that can grip six different types of nuts and bolts, including six-point, 12-point, partially-rounded, external TORX, square and spline. Comes in metric and SAE measurements.