Amazing at removing rounded nuts and bolts,;1/2 drive metric set;Never rounds off heads of nuts and bolts,;The more torque you apply the tighter they grip;Lifetime guarantee

• Grip-Tite 501 1/2-Inch Drive Metric Rounded Bolt Removal Socket Set (10-Piece)
• Metric

Grip-Tite 501 1/2-Inch Drive Metric Rounded Bolt Removal Socket Set (10-Piece)Grip-Tite.