Perfect for keeping dollies， wagons or carts rolling smoothly

Wheels are made of pneumatic tread and an inner core filled with pressurized air which remains inflated even with the weight of a vehicle resting on it

Tire has a high quality rubber casing designed for long-life

Sturdy pneumatic tread material provides enhanced noise reduction and consistent roll on any surface

Type: 2-piece rigid and amp， 2-piece swivel

Material: nylon reinforced rubber， steel

Mounting type: plate

Mount size: 4-1/2 in. x 4 in.

Maximum psi: 36 psi

Tire size: 10 in.

Tire width: 3-1/2 in.

Overall height: 12 in.

Maximum weight capacity per wheel: 300 lbs.

Package content: 2 x rigid tires， 2 x swivel tires