Make quick work of almost any fastener using the JobSmart 7 pc. Metric Ratchet Combination Wrench Set. Each tool offers both an open end and a box end, complete with a 72 fine tooth ratchet design that delivers fast, reliable performance. These wrenches are crafted from chrome vanadium steel and feature corrosion-resistant chrome plating for powerful strength. Thanks to the 7 included sizes ranging from 8 mm to 15 mm, this tool set comes in handy for a wide range of applications. For extra convenience, it's easy to keep the wrenches neat and organized with the included storage tray.