GEARWRENCH 85989 17-Piece XL GearBox Double Box End metric ratcheting wrench set consists of 1 of each 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 24mm, and 25mm XL GearBox ratcheting wrenches. Ratcheting box end needs as little as 5-Degree to move the fastener as opposed to 30-Degree for standard box end wrenches. The standard box end combined with the long pattern length gives this wrench excellent torque capabilities to break a stubborn, rusted fastener. The ratcheting box end then makes the loosening or tightening of the fastener fast and safe. The box end features improved strength from GearWrench Surface Drive technology and at the same time, reduces fastener rounding. These double box end ratcheting wrenches are made from premium alloy steel for a precision, long lasting tool. The set comes packed in a blow molded tray that fits nicely in your tool box.