Puncture-Proof: This outdoor wheel is made of solid PU material and does not require inflation, eliminating the risk of flat tires. Strong Load Bearing: Each caster wheel weighs approximately 510–550 g and supports up to 100 kg, making it ideal for transporting camping gear or heavy items with ease and stability. Durability: Constructed from high-quality PU, these solid wheels offer excellent resistance to cuts and abrasions, suitable for rugged terrain and demanding environments. High Elasticity: The wheels provide superior elasticity and shock absorption for enhanced comfort and performance. Weather Resistant: Designed to withstand UV exposure and outdoor conditions, these wheels resist environmental wear and maintain performance in various weather conditions. Specifications: Material: PU Dimensions: Diameter: 17.5 cm (6.89 in) Width: 10 cm (3.94 in) Bore Size: 0.9 cm (0.35 in) Package Includes: 1 Solid PU Caster Wheel Note: Please allow 1-3 mm error/1-3g weight error and actual product color may vary due to lighting conditions.