METRIC STREAMLINE SHAFT ANODE ZINC SHAFT SIZE: 25MM" DIA. LENGTH: 2" OUTSIDE DIA.: 2 1/4" WEIGHT: 1.0 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