The stainless steel stair climbing wheels are easy to attach to most shopping trolleys, providing a quick and simple upgrade to your existing cart. With their sturdy construction and reliable performance, these wheels ensure that your trolley can handle the demands of daily use, even on challenging terrain. Features -Color:Silver -Material:Stainless steel, rubber -Size:24.00X24.00X5.00cm/9.43X9.43X1.97in -Recommended wheel bearing diameter: 7-8 mm. -Recommended axle length: at 40 mm, and there must be a axle groove at the end. -Robust construction: made from stainless steel, this shopping cart is built to withstand heavy use and provide long-lasting performance -Stair climbing efficiency: the triangular wheels are engineered to make stair climbing easier, reducing the effort required to move items upstairs -Easy wheel replacement: the can be easily replaced, ensuring your cart remains in top condition with minimal effort -Quiet operation: the bearings in the wheels ensure smooth and quiet movement, enhancing your shopping experience -Handy installation: the snap-fit design of the stair climbing wheels allows for tool-free installation, making it quick and easy to set up Package list: 2 x triangular wheels