Attributes . Both Ends are the Same Size to Permit the Wrench to be Used in Four Different Positions, Continuous Arc Design Minimizes Spreading and is Stronger Than V Design, Thin Head is Perfect for Tight Clearances, Corrosion Resistance and Slip Resistant Grip, 45 Chamfer on Wrench Ends Allow Easy Placement of Wrench on the Fastener, Excellent for Fast Turning of Fasteners in Limited Clearance Areas, Each Wrench Has the Same Size Opening at Both Ends . Names