This product will support up to 500 pounds if planter is positioned evenly over wheels. The hole in the middle of the plant caddie helps your pots and planters drain properly to maintain healthy plants. The dark color of the caddie matches well with various pots and their surrounding decor. Bosmere down under plant caddie 5 high quality durable nylon and steel wheels 1 locking caster helps keep caddie in place UV resistant plastic Dark black color Plastic Made in USA Your security is our number one concern