The 12mm E-Thru axle chain tensioner from PRO Bike Gear is a high-quality accessory for bike frames, specifically designed for use with E-Thru thru-axles. With a diameter of 12 millimeters, this chain tensioner provides a reliable and stable attachment for your wheel. Made from a robust alloy, the product ensures durability and resilience, making it an ideal choice for demanding cyclists. The chain tensioner is available in an elegant black-and-white color combination and seamlessly adapts to various frame designs. The universal frame size "One Size" allows for easy integration into different bike models. The package includes a chain tensioner specifically designed for the E-Thru thru-axle, which simplifies installation and handling. This product is manufactured in France and represents the quality and precision essential for modern cycling.