STREAMLINE SHAFT ANODE ZINC SHAFT SIZE: 1 3/8" DIA. LENGTH: 2 1/2" OUTSIDE DIA.: 2 5/8" WEIGHT: 1.65 LBS EASY SIZE VERIFICATION INSIDE AND OUTSIDE EASY INSTALLATION - DEEP SLOTTED S.S. MACHINE SCREWS FOR MAXIUMUM TORQUE INNOVATIVE O-RINGS KEEP SCREWS FROM FALLING OUT