- Durable Materials : Crafted from premium PU and stainless steel, these wheels are designed to endure regular use and extend the lifespan of your shopping cart or trolley. - Convenient Replacement : Each package includes one pair of spare wheels, allowing for simple upgrades or replacements. Keep your cart functioning smoothly without the need for a complete purchase. - Optimal Size : With a diameter of 9 cm (3.54 inches), these compact wheels strike the perfect balance between stability and maneuverability, making them suitable for various terrains, including sidewalks, marketplaces, and indoor settings. - Stair Climbing Capability : Featuring a distinctive triangular design, these wheels facilitate easy stair navigation, ensuring a seamless experience when transporting your items up and down stairs. Use Scenarios : 1. Ideal for heavy grocery shopping—upgrade your cart and effortlessly navigate through crowded aisles and uneven surfaces with improved maneuverability. 2. Perfect for outdoor markets—enhance the functionality of your trolley to handle various terrains, from cobblestones to grass, with ease. 3. Designed for multi-level living spaces—effortlessly transport items between floors, simplifying your tasks at home or the office. Enhance your shopping experience with these reliable, well-designed wheels that prioritize performance and user convenience.