Tekuisi 18.9*3mm/21*5mm Bike Hub Conversion Spacers Gasket Aluminum alloy Boost Hub Kit Practical New Durable Hot sale

【 for Durable Materials】Made of materials, these bike hub conversion spacers are built to last, long-term durability and reliable performance.
【Easy Conversion】Designed for easy conversion, these spacers are suitable for converting 100mm hubs to 110mm and 142mm hubs to 148mm, providing a convenient solution for adjusting hub sizes.
【Precision Machining】With full CNC machining and fine turning, these spacers are precisely crafted to for ensure a smooth and burr-free , guaranteeing optimal functionality and seamless integration with your bike.
【Aluminum Alloy Construction】Crafted from lightweight aluminum alloy, these spacers offer a sturdy and reliable solution without adding unnecessary weight to your bicycle.
【Customizable Options】Available in black or red, you can choose the color that best suits your bike's aesthetics, allowing for personalization and enhancing the overall look of your bicycle.