GearWrench 9842 1/2-Inch x 9/16-Inch Half-Moon Double Box Ratcheting Wrench Half Moon shape provides ease in getting around obstacles Dual access reversing levers provides increase in productivity Ratcheting box-end needs as little as 5 degrees to move fastener VS. 30 degrees for standard box end wrenches Surface Drive design nearly eliminates fastener rounding Chrome finish