200 lbs Load Capacity: Unique dolly design works great when moving heavy furniture. Sturdy Steel Construction: Solid stamped steel construction provides top of the line durability. Steel body composition with just the right engineered lines to maintain rigidity under load. Gushioned Support: Foam discs offer furniture protection. Sturdy Swivel Action: durable polyolefin wheels with steel bearings. Swivel casters roll smoothly with heavy loads. The QWORK specialty leg dolly works great when moving heavy furniture up to 200lbs. It is made of polyethylene, has three swivel caster wheels, and can be placed under the leg of a table, desk, or other piece of furniture. The dolly is easy to clean, and is resistant to dents and corrosion. The caster wheels are 1-1/4 inches in diameter, and are made of polyolefin, which is water proof, and can absorb impacts, abrasions and won't harm your floor.