| Chrome-vanadium special heat treatment provides a strong thin wall |
| Unique open end Non-slip design allows you to remove damaged fasteners including up to 70% rounded off bolts and nuts |
| Spherical box end design can open various kinds of nuts, such as spline, 12 point, square, 6 point, even the 6 point 50% rounded off nuts |
| Includes sizes: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16" |