Description: 【Material】: These Stair Climbing Wheels are crafted from iron frame, ensuring a lightweight yet sturdy structure that can withstand regular use 【Size for Versatility】: The Shopping Cart Caster have a diameter of approximately 3.54inch, with height measuring about 8.66inch, making them suitable for various types of carts 【Enhance Stability with Anti Slip Design】: These Stair Climbing Caster Triangle Trolley Wheel offer strong load bearing capacity and an anti slip design to ensure stable performance on all surface without the need for inflation 【Easy Installation Process】: Designed as direct replacement parts for your old components, these Stair Climber Dolly can be easily assembled onto the axle, simplifying the upgrade process 【Wide Range of Applications】: The Cart Caster is ideal as foam tri wheel replacements for shopping carts, multi functional carts, laundry carts, folding carts, portable carts, and stair climbing carts among others Specification: Height: 22cm/8.66inch Wheel Diameter: 9cm/3.54inch Package Includes: 2 Stair Climbing Wheels Note: Please allow slightly errors 1-2cm differences due to manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.