For use in SALT WATER. Compatibility Fits all Flexofold 2-blade LA (closed gearing) propellers. Fits all Flexofold 3-blade propellers. Fits Flexofold 4-blade up to 23". Description Zinc anode for use on Flexofold propeller in SALT WATER. Net weight = 0,5 kgs. Includes mounting screw pre-applied with Dri-Loc®. Mounting Tool needed for mounting: Allen wrench, 6 mm. The Dri-Loc® is usable for mounting above as well as under water. For further information, please download mounting instruction for your specific Flexofold propeller. NOTE: If reusing any screws pre-applied with Dri-Loc® after they have been mounted once, threadlocker must be applied to the screws again. The function of the Dri-Loc® only works once. We recommend using Loctite® 243 Blue Medium Strength Threadlocker.