Features RUBBER MATERIAL: The inner tube is mainly made of excellent rubber material, which has good impact force, and not easily punctured or worn out. TIRE SPECIFICATIONS: 6 inch inflatable tire replacement, 36PSI load bearing capacity, with standard size, which is easy to install and replace. CONVENIENT USE: The tire can be installed directly after inflation without softening, the thickened valve seat can prevent tearing of the inflation port. REPLACEMENT PARTS: Including outer tire and inner tube, which can replace the casters on wheelchairs or trolleys, making it easy to install and use. GREATER TRACTION: Straight grain tire provides greater traction, and suitable for rolling on various surfaces, making operation easy and labor saving. Specification: Item Type: Inflatable Tire Material: Rubber Outer Diameter: 6 Inch Load Capacity: 36PSI Package List: 1 x Outer Tire 1 x Inner Tube Package List 1 x Outer Tire 1 x Inner Tube