Heavy Duty Golf Push Cart Umbrella Holder,Universal Umbrella Stand for Mobility Scooter, Stroller, Wheelchair, Beach Chair-Upgraded aluminum alloy base umbrella holder, multiple fixed knobs to ensure no shaking, super strong windproof, hold your umbrella to protect you from sunshine or rain.- Double knob design fixed umbrella handle, without any slippage, adjustable internal width by knob tightening. Only fit 1.8-inch max diameter round straight handle umbrellas(Not for bending, folding, irregular shape handle).- 4 Bolts & hexagon clamp hold base mount in place, offers the tightest grip ever to keep your umbrella upright, fits on 0.7-1.3 inch diameter round / oval frames or square tube, comes with wrench tool easy install and removal.- Can be adjust 180 degrees left or right, forward or backward with 2 knobs; the central rotating support shaft made of high-strength glafiber reinforced plastics, won’t crack or break.- Wide application: use on golf push cart, mobility scooter, stroller,