Description: 360° universal smooth rotation, free control of direction, small and lightweight. Embedded push wheel, Suitable for folding bike with 33.9 seatpost specifications such as for and fits for Dahon, and for all kinds of seat tube, also can be installed on the round tube like table, garment racks or shelf(diameter 28-32mm). Fasten the wheels on the seat tube, and do not affect the removal and installation of the seat tube, the folded bike can be pushed on flat ground. This Folding bike Seatpost Embedded Easywheel Wheel Roller is made of premium Aluminium Alloy material, high strength, lightweight and solid. Easy installation and be embedded inside the folding bicycle seat pole, which is convenient and perfect for folding bike traveling, transporting, carrying easily. Specification: Material: Aluminum Alloy and Rubber Color: Black/ Red/ Yellow/ Silver(Optional) Weight: About 43g Size: 62x32mm Diameter: 140mm Size Chart: 62x32mm/2.44x1.26inch Package Includes: 1*Bike Easy Wheel Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!