【Premium Material】The Shopping Cart Stair Climbing Wheel is made of PU material, which is reliable in quality, wear resistant and sturdy, and has a long service life. 【Stable Design】Caster Replacement adopts a triangular structure design to ensure stability when transporting goods, allowing your shopping cart to remain balanced. 【Wide Application】Triangle Wheel is suitable for Folding Grocery Cart, Shopping Cart, Foldable cart, Laundry Cart, Wheelbarrow, Trolley, Stair Climbing Cart, Moving Cart, etc. Suitable for 7mm/0.28inch-7.5mm/0.30inch axles, and the length of both ends of the axle is 3.9cm/1.54inch-4.2cm/1.65inch 【Easy to Install】Heavy Duty Shopping Cart Wheel is simple and convenient to install, and can also be easily disassembled. You can use it to replace old or broken wheels. 【Practical】Cart Stair Wheel can help you easily transport goods, making shopping more comfortable, efficient, and easy. Specification: Material: PU Size Chart: Single wheel diameter 9cm/3.54inch Package Includes: 1x Shopping Cart Stair Climbing Wheel Note: Please allow slightly errors 1-2cm differences due to manual measurement.