Our innovative design combines the mobile umbrella base and umbrella side table into one unit so you can move wherever you want and carry whatever you need at the same time. With 3" dia. swivel wheel at each corner, you can brake the wheels to lock the position or release the brake to move or rotate at the full 175 lbs filled weight. It fits both the 10 ft. offset umbrella with max. 2.3” dia. pole size and the 1.5”/1.9” dia. center pole umbrella. Also no water or sand is required as filling weight so no worry about any leakage. With our base's true mobility, you can now move the 10 ft umbrella to cover different areas or match with Sun's movement to get the full shade for the same spot, thus no need to go with a much larger cantilever umbrella for the same purpose to save your money and space. Used for 10 ft offset or center pole umbrella. Which this umbrella base is with 175 lbs filled weight, if your cantilever umbrella requires heavery weight, chose our larger model with ASIN B0C6JRGTJ8 which has 360 lbs total weight.