Amazon.com has a Black and Decker AAW100 8-Inch Auto Wrench Adjusting Wrench for $9.97 with Free Shipping on orders over $25.
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- 8-inch automatic adjustable wrench, autowrench n
- Automatically adjusts to any size nut or bolt up to 1-1/4-inch at touch of button n
- Professional heat-treated hardened steel provides 220 foot-pounds of torque n
- Includes wrench and 2 AAA batteries n
- 8-inches long; 1.3 pounds; 2-year warranty