Long life and maitenance free! 100% no pollution for the sea water environment! The best quality and competitive price! Long life and maitenance free!100% no pollution for the sea water environment!The best quality and competitive price!The sevice is also the best!All above substantial benefit from Yaoxing brand! (Type)HBF 0.6HBF1.0HBF1.2HBF1.5HBF1.8HBF2.4HBF3.0(Specification) (diameter/mm) ...