Up for sale is a 4 pack of Martyr 3/4" X 3/4" pencil anode part number CMEZ3S. 

Length:  3/4" (19.1mm)
Diameter:  3/4" (19.1mm)
Thread: 1/2-13 UNC

 These are new parts and you will be shipped 4 each as pictured.  We ship USPS First Class Mail for quick delivery and easy tracking.   Check out our other items!