DetailsThe grid design on the back effectively distributes the load. Four 360-degree wheels with thickened internal structures carry more weightBrown Pallet Size - Inner Depth - 20mm / 0.79 inch; Height - 35mm / 1.38 inch; Outer Diameter - 300mm / 11.81 inch; Base Inner Diameter - 265mm / 10.43 inchThe matte surface of the tray increases friction with the pot bottom to keep the planter will not toppling over during movement. The wheeled pallet prevents the floor from wetting when watering the planter pots, and sliding off the trolley when movingThe caddy rolls smoothly over hardwood, concrete, carpet, patio, wooden floor. Widely used indoor and outdoor for moving garden pots, heavy plants, potted trees, vases, wine buckets, small furniture, or trash cans, and can protect your floor from being worn outNo assembly is needed. Please measure the bottom outer diameter of your flowerpots before ordering to ensure the matching size. You can drill drain holes on the board if need. Castors can be removed to turn into a planter saucer