Gear Wrench 85099 16 Piece Metric XL Ratcheting Wrench Set Up to 25% longer than standard gearwrench for extra leverage. Surface drive increases box end strength by up to 20%, providing more torque and reducing fastener rounding on the open end. Stores in wrench rack. Limited lifetime warranty. Limited lifetime warranty. Technical Details - Surface Drive Plus provides stronger grip on fasteners, nearly eliminating fastener rounding - Oval shape beam provides improved comfort - Ratcheting box-end needs as little as 5 degrees to move fastener VS. 30 degrees for standard box end wrenches - Up to 25% longer delivering up to 25% more torque for those hard to reach fasteners - Surface Drive Design provides improved box end strength http://www.bestbuyking.co.cc/Buy-Gear_Wrench_85099_16_Piece_Metric_XL_Ratcheting_Wrench_Set-B000HBDX60.html