25Kg Resin Garden Parasol Base, Heavy Duty Umbrella Stand Holder with Wheels,Outdoor round All Weather Patio Umbrella Stand for Deck Poolside Black. Thumb Screw: Two rotary knobs are provided on the side of the center pole to settle the patio umbrella on this base stand, by simply turning the knob left and right, the patio umbrella can be fixed or detached from this outdoor umbrella base stand.
