The Vevor manual boat trailer dolly is built to move boats, kayaks, canoes, motorboats, and fishing boats with up to 420 lbs of tongue weight capacity. Its adjustable length helps fit different boat sizes, while large 15.7" pneumatic tires roll smoothly over grass, sand, and concrete. A carbon steel frame with galvanized and powder-coated finish is designed for outdoor durability and rust resistance. Nonslip rubber support brackets help keep the boat secure during transport. The widened wheelbase adds stability for easier handling on slopes and uneven ground.