The Prop Master Prop Stop® can be used on you outboard's lower unit to lock your propeller in place so that when you use the Prop Master Prop Wrench (sold separately) to loosen the prop nut, your prop will not spin. When it is time to reinstall your prop or install a new prop, simply swap the prop stop to the other side of your lower unit to prevent the prop from turning the other way. It's brilliantly simple and effective. Remember to always remove the prop stop before using your boat's motor.
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