Product Name: The Class Medium Duty Caster Wheel Model NO.: 25SR30BR Bearing Type: Plain Bearing Wheel Material: PU Color: Black Material: PU Model: 25sr30br Trademark: carefree Transport Package: Wooden Boxes, Cartons or Plastic Bags Origin: Jiaxing Zhejiang Product Description We can manufacture the PU foamed and PU filled tires, our tires are mainly used on the hand truck, wheelbarrow, lawn mower, wheelchair and other mobility equipments. The tires are also called Carefree tires, Flat free tires, air free tires, never flat tires and puncture proof tires.