Wright® Toolbox End Wrench, Imperial, Ratcheting Wrench, 3/8 x 7/16 in Wrench Opening, 12 Points, 5-1/2 in OAL, 7/8 x 25/32 in Box End Width, 5/16 in Box End Thickness, Flat HandleWright® Wrenches Feel as Good as They Look and They Have a Reserve of Strength For Tough Jobs. They Feature The Patented Wright® Drive™, Which Provides More Torque with Less Fastener Damage, Distributing Stress Evenly Over a Larger Contact Area and Away From The Fastener Corners. They're Ideal For Applications Ranging From Standard Nuts and Bolts to Aerospace Fasteners. We Also Offer Striking Wrenches For Extra-Heavy-Duty Use. Wright® 9382 Box End Wrench, 3/8 x 7/16 in Wrench, 12 Points, 5-1/2 in OAL