Williams 1230MSC Super Torque Combination Wrench 30 Millimeter

From the Manufacturer Snap-on Industrial Brand JH Williams 30 millimeter super torque combination wrench is a metric wrench with a high polish chrome finish and a 12 point box end. The super torque box opening design allows application of higher torque without rounding or deforming hex fastener points. No contact is made at the corners. Instead, wrenching forces are placed on the flat surfaces behind the points. It may be used on all common hex 6 point fasteners with considerable advantage over conventional box end wrenches to increase both hand tool flexibility and economy. The box and open end openings are identical.