- Adjustable Length for Versatile Fit: This bicycle trainer axle features adjustable length with spacers, accommodating thru axle hubs from 135mm to 148mm. It fits bike frames up to 176mm wide, ensuring compatibility with a wide range of bike models. - Stable Training Experience: Designed with tapered heads on both ends, this axle ensures a secure fit in most bike trainer mounting holes, minimizing slippage and enhancing stability during your training sessions. - Durable Aluminum Alloy Construction: Crafted from high-quality 6061 aluminum alloy, this hub axle is built to withstand the rigors of regular use without sacrificing strength or performance. - Protection for Your Bike Frame: The tailored spacers are designed to fit snugly into the dropout shape, providing an additional layer of protection for your bike frame during intense training, preventing potential damage. Use Scenarios: 1. Ideal for indoor training: Perfect for cyclists looking to maintain performance during winter months or inclement weather by providing a stable and secure setup on their bike trainer. 2. Great for competitive training: Whether you're preparing for a race or improving your cycling skills, this axle ensures your bike stays secure and stable, allowing for focused training sessions. 3. Versatile for various bike models: Whether you have a mountain bike, road bike, or hybrid, this adjustable axle accommodates different frame sizes and axle widths, making it a practical addition to your training equipment.