Combination Spanner, AF / Imperial (SAE), DIN 3113A. Chrome vanadium. Satin Finish. Same dimension at both ends. The 12 point ring is at a 15degree angle.
| Size | L (mm) | H1 (mm) | H2 (mm) | D1 (mm) | D2 (mm) | T (mm) | Weight (g) |
| 5/16inch | 120 | 5.5 | 4.5 | 12.8 | 19.2 | 3.0 | 25 |