1、3mm Thickness: Our wrench set have been increased in common sizes to better meet more needs. The wrenches are 3mm thick, allowing you to use them effectively in tight area. 2、Non Slip: The wrenches are crafted with accuracy to fit all fasteners perfectly, so they will not slip during use and very practical. 3、Matching Types: Two sizes per wrench for almost all types of maintenance and mechanical work. Large hard stamped dimensional markings for wrenches. 4、High Carbon Steel Material: Our wrench set are made of high carbon steel, heat treated for high hardness. Mirror polished to prevent rusting and long life. 5、Easy to Store: The wrench set comes with a storage bag for easy storage and portability. They are neatly rolled up in a storage bag for storing in your car trunk or in mechanical gear. 6、Usage Scenarios: Our wrench sets are widely applied in bike, motorcycle, auto repair, home, machinery, electrical and other industries. 11 x Dual Open End Wrench1 x Storage Bag Item Type: Dual Open End WrenchMaterial: High carbon steelSystem: Metric systemHandle Type: Straight handleWrench Shape: Double end wrenchSize: Approx. 6 x 7mm / 0.24 x 0.28in, 8 x 9mm / 0.31 x 0.35in, 10 x 11mm / 0.39 x 0.43in, 12 x 13mm / 0.47 x 0.51in, 14 x 15mm / 0.55 x 0.59in, 16 x 17mm / 0.63 x 0.67in, 18 x 19mm / 0.71 x 0.75in, 20 x 21mm / 0.79 x 0.83in, 22 x 24mm / 0.87 x 0.94in, 24 x 27mm / 0.94 x 1.06in, 30 x 32mm / 1.18 x 1.26in