Description: Material: This marine boat trailer jack is made of carbon steel, reliable to use, strong, and more stable, making it sturdy, resistant to rusting or breaking. It can withstand water, dirt, mud etc., ensuring long term preservation and usage.Feature: 1500lbs RV trailer jack, good stability, strong bearing capacity, foldable, the wheel is wear resistant and long service life. Multifunctional: Ergonomic design, hand cranking is more labor saving, allows for effortless movement of your trailer. It provides stable and smooth driving, preventing it from getting stuck or sliding in muddy conditions, and makes connecting and positioning your boat trailer easier.Easy to Use: This trailer jack adds mobility to your boat trailer or multipurpose trailer. The handle is easy to grip and control, helping you to quickly and smoothly raise or lower your trailer.Application: The boat trailer jack is suitable for all types of trailers, boats, RV, etc. It is capable of handling heavy loads efficiently. Specification: Material: Carbon Steel Package Includes: 1Marine Boat Trailer Jack Note: Please allow slightly errors 1-2cm differences due to manual measurement.