This wrench set by Craftsman® includes 7 wrenches made of durable steel with a chrome plated finish that provides resistance to corrosion. With the 12-point ratchet box end, the reversible engagement is easier and faster. The 15-degree box end is offset to provide additional space to work. The set meets the ASME certifications and includes 7 metric wrenches of 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, and 17 mm. This product is backed by a lifetime warranty.