Colour:Blue Features: -Made of high-quality PP material, good toughness, acid and alkali resistant, wear-resistant and durable. -The four 360° swivel wheels with 4 locks allow the roller board to stay in place or be easily moved in any direction. -The expandable design can easily adapt to plant growth needs and is suitable for plants of different sizes. -Easy to use, just install the wheels with the screwdriver and you're ready to go. -Suitable for living room, balcony, patio, garden or any other indoor and outdoor use, can be used for flower pots, air conditioners, radiators, large vases, buckets, parasols or other heavy objects. .