Round design: Allows you to place a variety of items, from small to large flower pots. Made of sturdy resin plastic, prevents water from plant pots from seeping onto your floor. Lightweight but powerful, easy to carry, and strong enough to hold items weighing up to 40 kg (90 lbs). With this plant stand, you don't have to worry about scratching the floor when moving a huge flower pot. Easy to install: Each pallet cart has four wheels, with screws on the wheels, and can be installed without any other tools. Specification: Color: Black Material: PP Resin Inner Diameter: 30cm/12inch Outer Diameter: 33cm Height: 3.5inch, including the wheel. The weight of each pallet is 450g Package Included: 2 x Pallets 8 x Wheels How to install and use: 1. Turn the entire pallet over 2. Turn the wheel to the socket 3. Press the wheel hard until you hear a complete "click" 4. Put your flower pot flat