Details ?Pure Copper Cap: The cap is made of high-strength, wear-resistant copper, so it is strong and durable.?Anti-slip Surface. The uneven pattern of the surface increases the friction with the ground so that it can run stably.?PE Wheel Hub: The wheel hub is made of high-quality PE so it is corrosion and wear-resistant and can be used for a long time without damage.?Nylon Axle Plug: Tensile and wear-resistant nylon and a six-jaw structure provide excellent performance for the axle plug.Application✅These beach inflatable wheels can get through the sandy beach and transport a heavy load across any sandy or uneven terrain. It is versatile, making it a perfect companion for beach trips, camping, fishing, and gardening.SpecificationMaterial: PVCColor: Silver GraySingle Maximum Load Capacity(Each): 40kg/88.18lbsMaximum Range of Inflatable Air Pressure: 3-5PSI/0.2-0.34BAROuter Diameter of Wheel Hub: 10.5cm/4.13inInner Diameter of Wheel Hub: 20mm/0.78inGross Weight: 2.3kg/5.07lbsNet Weight: 1.8kg/3.96lbsPackage Size: 28x18x18cm/11.02x7.08x7.08inProduct Diameter: 22.86cm/9inProduct Thickness: 11.43cm/4.5inPackage Included2x Beach Inflatable WheelsNotes1. This product is low-pressure slow-speed tires for cart or slow-speed car use, not for high-speed or electric.2. Inflation pressure is 3-5PSI/0.2-0.34BAR, please do not exceed this range. The maximum diameter after inflation, please do not exceed 9 inches, otherwise, it will cause damage to the tire.