Fit and width adjustment: the included spacer set provides easy width adjustment for a precise pairing of your bike and trainer, delivering performance. Easy installation: remove your bike's existing thruaxle and it with this adapter. It adds a stylish look and enhances wear resistance, and you can start indoor training with no special tools or expertise required. Strong and durable: crafted from quality alloy, this cycle trainer skewer offers sturdy, longlasting performance with wear resistance and no deformation or rust. Seamless indoor training setup: available in three thread pitch options P1.0, P1.5, and 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 a road or gravel bike with a 135 148mm rear spacing and need to mount it to a trainer that requires a thruaxle interface. Install the adapter with the included spacers to achieve a secure, precise fit and begin indoor training quickly. Scenario 2: You have an existing thruaxle that is worn or damaged. it with this alloy adapter to restore secure mounting and extend the life of your trainer setup. Scenario 3: You manage multiple bikes with different rearaxle widths. Use the spacer set to adjust width and select the appropriate thread pitch to fit each biketrainer pairing, simplifying transitions between bikes.