: SAFETY COMES FIRST: These RV water heater anode rods are made from durable magnesium guaranteed to withstand the test of time. COMPATIBILITY: These magnesium anode rods are 9.25 long, come with NPT threads and are compatible for Suburban and for Mor-Flo water tanks. LONGER LIFE: These water heater magnesium anode rods work better than aluminum ones in attracting corrosive elements, protecting your water heater and prolonging its life. USES: For fixing up your water heater tank and optimizing its functionality. SOCKET SIZE: The rods use a 1-1/16 inch socket. Specification: Material: magnesium Type: A, B Color: anode rod: black+silver Size(approx): NPT3/4*21*238mm/NPT3/4*0.82(D)*9.25inch(L) Package: Type A: 1 pc x anode rod Type B: 1 pc x anode rod 1 pc x socket Note: 1. Due to the light and screen difference, the items color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.