Support the trailer with ease. It is designed to keep the jack from sinking. Perfect for tongue jacks of all types. Heavy-duty construction and durable powder coat finish for years of reliable use. Just slip into the jack leg and connect with a provided pen. The pad tube is 2-inch OD, which fits for jacks with a 2-1/4 Inch diameter leg. Universal mounting flange and 3/8 Inch bolts (not included). A large 4-inch x 7-Inch footpad helps prevent sinking. It features a pin and clip system for easy attachment and easy removal. 650 Pound tongue weight capacity.