Description: Wheelchair Street Tire Replacement: tires replace for most wheelchair. Non Pneumatic Tires: New type of non pneumatic tires.Synthetic rubber solid elastic tires have the advantages of thorough puncture resistance, no inflation, high strength, light weight and durability, moderate elasticity PU Polyurethane Material: solid tyre, wear resistant, anti skied, Strong and durable. Easy to Install: Easy install and removed.Can smooth roll over all surfaces. High Quality: Environmentally friendly replacement Wheelchair Street Tire, no irritating smell. Specifications: Material: Polyurethane (PU) Size: (Optional) 20X1 3/8 inch Suitable for rim outer diameter approx.460mm/18.1 inch Slot inner width approx.18-21mm/0.7-0.8 inch 22x1 3/8 inch Suitable for rim outer diameter approx.510mm/20.1 inch Slot inner width approx.18-21mm/0.7-0.8 inch 24X1 3/8 inch Suitable for rim outer diameter approx.550mm/21.7 inch Slot inner width approx.18-21mm/0.7-0.8 inch Note: 1.Please allow slightly error due to manual measurement. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.Wish you a wonderful online shopping! Package included: 1 Piece Tire