& OOTDTY Features: Made of high-quality aluminum alloy and Oxford bearing wheel material, corrosion-resistant, wear-resistant, not easy to deform, sturdy and , and has a long service life. Quick disassembly and quick assembly without tools. Small size, lightweight, portable, easy to carry and store. Widely used, perfect for most folding bikes on the market. Once you have your bike folded, this wheel can help you and make your journey easier! Specifications: Materials: Aluminum Alloy + Oxford Wheel Bearing Size: app.10.7x3.3cm/4.21x1.30in Optional Colors: Black, Green Quantity: 1pcNote: Please allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 1 x Roller Wheel (Other accessories shown in the picture are not included.)