Kobalt 338415 12-mm 72-Tooth Reversible Ratcheting Combination Wrench WRENCH SIZE - 12mm metric combination wrench DURABLE STEEL TOOL - Wrench is made from heat-treated chrome vanadium steel for long lasting durability 12-POINT BOX - 12-Point box end design allows wrench to be used on 12-point, 6-point, square, star and partially rounded fasteners EASY IDENTIFICATION - Size callouts are hard stamped into the steel and a blue stripe helps quickly identify wrench as metric REVERSIBLE RATCHET - Box end features an integrated 72-tooth reversible ratchet that only needs a 5-degree arc swing to function