1. SOLID REPLACEMENT WHEEL: The tire part is made of rubber material, bearing type 6001, the wheel is strong and explosion proof, no need for inflation, excellent and durable2. NON SLIP AND SAFE: Tire texture is wear resistant, with good non slip effect, and high safety factor3. STABLE AND ELASTIC: Rubber wheel is made of elastic rubber material, suitable for all kinds of road , with stable performance4. 300lb BEARING CAPACITY: Heavy climbing triangular wheel adopt galvanized iron bracket, with galvanized coating treatment, not easy to rust, more robust with strong bearing capacity5. VERSATILE USAGE: This stair climbing wheel is suitable for various applications, including transporting goods, moving heavy objects, and even overcoming obstacles like stairs, curbs, and uneven terrainSpec:Item Type: Stair Climbing WheelMaterial: Rubber and ABSIndividual Wheel Size(diameter x width): Approx. 160 x 40mm / 6.3 x 1.57inLoad Capacity: 300lbHow to Use:Install and use directly.Package List:1 x Stair Climbing Wheel