Set up your boat trailer with this Heavy Duty 10 inch Keel Boat Trailer Roller, these black rubber boat rollers are extremely common. They are typically installed along the keel of boats as a means of protecting the hull, and allowing easy loading and unloading.
This Roller is Made of Heavy Duty Black Rubber and has a 5/8" inner bore to accept a 5/8" Roller Shaft. Having keel rollers makes Launching Your Boat a Breeze and the Tapered Design for allows Optimal Hull Support.
It is important to regularly check your existing trailer rollers for cracking and flat spots. If you have worn rollers it is crucial to replace them before they fail because a broken roller will ultimately result in damage to your boats keel.