Do you prefer years of lasting productivity on your fishing/commercial boats or personal yacht. If you have issues with maintaining fuel or engine troubles with the current setting you have on your vessel, wish to upgrade or downgrade your engine for higher hull speed or to economize fuel consumption respectively. We are willing to resolve your problem  without asking you to buy new propeller however we always see to it that your old propeller will still be of service to you after our modification from diameter adjustment, re-pitching  and expanding blade area with our skilled workers and expert designer.