1、Smooth Boat Loading: The 3in boat trailer roller assembly provides a smooth surface for the boat to slide on during the loading and unloading process, ensuring hassle free operation. 2、Damage Prevention: Designed with PU material, the roller plays a crucial role in preventing friction and damage to both the boat's hull and the trailer, protecting your investment. 3、Easy Installation: With a 3x3in size and a 1/2in center hole, these rollers are easy to install and suitable for various trailer setups and docking scenarios, offering versatility and convenience. 4、Solid Construction: Made of PU material, these rollers are long lasting, providing reliable support for your boat trailer and ensuring a smooth sailing experience. 5、Universal Compatibility: Suitable for boat trailers, these 3in Bow Stop Rollers are a versatile and practical choice for boat owners, enhancing the efficiency of your trailer system. Item Type: 3in Bow Roller Material: PU Size: Approx. 7.62x7.62cm / 3x3in Center Hole Diameter: 1/2in Fitment: Fits for Boat Trailer 1 x 3in Bow Roller