The Prop Master Prop Stop from T-H Marine is a must-have tool for every boater who wants to protect their propeller and prevent damage to their boat. Made with high-quality materials, this propeller stop is designed to provide a secure fit that prevents the prop from spinning during maintenance and storage. With the Prop Master Prop Stop, you can easily change your prop without worrying about any accidents or injuries. Its unique design ensures that the prop stays in place, preventing it from spinning unexpectedly and causing damage to the boat or injury to yourself.