This heavy-duty panel dolly is equipped with 10 in. solid rubber tires, which completely eliminate the risk of flat tires and maintain stability when operating in rough or rocky terrain. Featuring a unique design, the dolly automatically clamps the cargo once weight is loaded, with greater load comes stronger clamping force. Its internal channels are treated with a powder coating, providing excellent impact resistance and corrosion protection to keep the cargo undamaged. The side panels of the dolly can be quickly adjusted within a range of 0 to 6.1 in. (0 ~15.5 cm), making it compatible with boards or stone slabs up to 6.1 in. thick. It is suitable for transporting most materials such as drywall and door panels; if the panels are too long, multiple dollies can be used together to maintain balance. Built with an overall heavy-duty design, the dolly has a load-bearing capacity of 1,000 lbs., allowing for easy transportation of heavy items. It is often used to move materials like drywall and heavy equipment. Meanwhile, thanks to the 10 in. solid rubber tires, it moves smoothly and quietly without noise. The tire diameter is also designed for easy maneuverability, which simplifies the material handling process and improves work efficiency.