Wrench Bx 12Point Lng 1-1/16 X 1-1/ Features and Benefits: Made in the USA - Quality and Availability Both Box Ends Incorporate a Radius Corner Design That Engages the Flats of the Fastener Not the Corners Providing Up to 15% -20% More Torque While Reducing Fastener Rounding Enhancing the Turning of Worn Fasteners Two Different Size Openings on Opposite Ends Provides Broader Coverage than a Combination Wrench Less Wrenches to Carry Box Ends Are Offset 45° for Clearing Large Obstructions Reaching Recessed Fasteners and Knuckle Clearance on Flat Surfaces Manufactured From High Alloy Steel Using the Most Up-To-Date Manufacturing Process and Heat Treat for Greater Strength and Durability