The image is a representation of the Series and not that of the specific model. Specifications: Tube O.D. (φD): 1/2 Release Ring (φZ): 19.8 Release Ring (X): - Release Ring (Y): - R: 1/2-14NPT A: 15 B: 36.5 L: 38.9 φP: 21 C: 23.5 E: 54.5 Hex (inch): 7/8 Effective Area (mm2): 29.8 Weight (g): 82