Black & Decker AAW100 8-Inch Auto Wrench Adjusting Wrench Auto wrench includes a push-button adjustment to fit nuts and bolts up to 1-1/4-inch Perfect for tight spaces with limited visibility, such as under kitchen sinks Designed with heat-treated hardened steel to provide 220 pounds of torque Measures 8-inches long; weighs 1.3 pounds Includes 2 AAA batteries