Brand: Beta Tools
The 55AS Series Open-End Wrenches have two different-size open ends, each set at a 15° angle to the shank. One end of this wrench fits SAE fasteners with a 1/4" hex, and the other end fits 5/16" hex fasteners. Sold individually.
| Beta Tools 55AS1/4x5/16 Dimensions |
Dimension (see drawing) | Name | SAE | Metric |
| L | Length | 4.72" | 120mm |
| S | Head Thickness | 0.14" | 3.5mm |
| A | Head OD | 0.61" | 15.5mm |
| A1 | Head OD | 0.69" | 17.5mm |
| Weight | 0.8 oz | 21.5g |