The Zacuto Z-RE-FM3.5 is a male/female 3.5" rod extension. The extension is helpful for any situation where longer rods are required, including mounting heavy and long telephoto lenses. They are made out of 6061 aluminum and the threads are 1/2" 13.
Zacuto Z-RE-FM3.5 Features
Female on one end and male on the other
1 rod extension only
15mm diameter with 60mm spacing and clear anodizing