- Easily adjustable width: comes with a variety of thickness spacers for quick width adjustment, ensuring a perfect bike-trainer thru axle skewer fit every time. - Easy installation: swap your bike's thru-axle with this adapter for upgraded wear resistance and a sleek appearance; effortlessly kickstart your indoor training routine. - Strength in every ride: engineered with high-quality alloy material, this cycle trainer skewer offers sturdiness and longevity, ensuring it stays wear-resistant and has no deformation or rust for enduring performance. - Seamless indoor training setup: available in three thread pitch options P1.0, P1.5, P1.75 and designed to fit rear axles from 135mm to 148mm, ensuring wide compatibility and easy integration with various bike models and trainers. Use scenarios - Scenario 1: You own multiple bikes with different rear spacing and axle standards. Use the spacer set to adjust the width and fit the trainer skewer quickly for each ride. - Scenario 2: You switch between indoor trainer sessions and road rides. This adapter enables fast, tool-light swaps while maintaining alignment and wear resistance. - Scenario 3: You want to upgrade an older or worn-out trainer setup. Install this alloy adapter to restore a secure fit, reduce wear on the original components, and maintain a clean, finished appearance.