Description: High Load Bearing Capacity: Boat trailer jack is made of quality iron galvanized and rubber wheel material, with a design load bearing capacity of 150kg, which can be used for a long time.8 Inch Guide Wheel: Trailer jack equipped with guide wheels, it provides a larger support surface and better mobility, making the trailer operation more flexible and convenient.Hand Crank Design: Trailer jack the hand crank bracket design makes the lifting process more labor saving and efficient, and the lifting operation can be achieved by gently shaking the handle.Wide Application: Boat trailer jack is suitable for various yacht trailers and RVs, ensuring stability and safe during use.Easy to Install and Operate: The Boat trailer jack is simple, and the installation process is quick and convenient, without the need for professional tools. Specification: Material: Galvanized Iron, Rubber WheelProduct Size: Retracted Size 605mm, Extended Size 835mm, Wheel 200mm Package Includes: 1 Boat Trailer Jack Note: Please allow slightly errors 1-2cm differences due to manual measurement.