Features: Experience easy stair climbing with our Stair Climbing Wheel, featuring a stable triangle structure that significantly reduces the effort need to move your cart upstairs. Crafted from high elasticity crystal PU material, these Wheel offer , Quiet , and smooth Performances across various surfaces, enhancing stability and load bearing capacity. Ideal for family frequently transporting heavy items, couriers, and warehouse workers, these Wheel provide a reliable solution for everyday challenge . Perfect for stair transportation, shopping cart modifications, and luggage upgrades, these Multifunction Wheel adapt to multiple situation , ensuring convenience and efficiency. Upgrades your utility cart or foldable shopping cart with these strong stair Climbers Wheel, designs to with stand the demands of city living while providing smooth Mobilities. Specifications: Material: steel+pu Length: about 24cm/9.45inch Single wheel diameter: about 9cm/3.54inch Package Includes: 2xStair Climbing Wheel note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.