James
Zinc
Haven't installed them yet but I received them and they look like they are very good, Herod the Great price for them
METRIC STREAMLINE SHAFT ANODE ZINC SHAFT SIZE: 40MM" DIA. LENGTH: 2 5/8" OUTSIDE DIA.: 2 3/4" WEIGHT: 1.6 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