Designed for durable and reliable performance, this Maxwheels pneumatic wheel absorbs shocks and vibrations caused by outdoor terrain. Moving smoothly over rough surfaces, this wheel is suitable for use on concrete, asphalt, gravel and wood planking. It features a ribbed tread for great traction and a centered hub. The axel is 5/8" (16 mm) in diameter and 6" (152 mm) in length. A great choice for installation on wheelbarrows, this pneumatic wheel is 16" (406 mm) in diameter and has a load capacity of 309 lbs (140 kg).