Marine Wobble Roller Trailer Roller For Pontoon Rubber Boat Description: [High Quality Material]: Boat trailer rollers are made of high quality PP processing, which is sturdy and durable for long-term use. [Wide Application]: Trailer roll is a universal accessory that is widely used in boats, yachts, trailers, yacht motorcycles, etc., which can fully meet your needs. [Function]: Boat rollers can help load the boat onto the trailer without scratching the car, help improve work efficiency and are at the same time very practical. [Easy to Use]: Boat trailer swing rollers are excellent in workmanship, unbreakable, resistant to high temperatures and easy to use and install, saving energy and time. [Perfect Parts]: The wheel has high reliability and stable performance and can directly replace old or damaged parts. Size Chart: Mounting hole with inner diameter of 1,1 inches, length of 5 inches and width of 3 inches The package includes: 4 Roll of boat trailer 8 spacers 4 pins