PMPS-1-DPT-H Marine Prop Master Propeller Stop The Prop Master Propeller Stop is designed to make changing your boat's propeller quick and safe. This innovative tool securely holds the prop in place, ensuring that you can perform the necessary maintenance with confidence. Brightly colored for easy visibility, it's a must-have for any boater. Remember to remove the propeller stop before using your boat! WARNING: This product can expose you to chemicals which are known to the State of California to cause c