The ring head is offset 15 degrees to facilitate use even on flat surfaces.
12 piece Anti-Slip metric combination spanner set Sizes 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm Anti slip grip on the open end as well as the hip grip function where the spanner drives on the flank of the fastening rather than the corner Hole in the handle for securing the tool while working at height The design also provides grip on fastenings with worn or rounded corners.