- Versatile Compatibility: This bicycle trainer axle features an adjustable length with spacers, making it compatible with thru axle hubs of 135mm, 142mm, and 148mm. It fits bike frames up to 176mm wide, ensuring it works seamlessly with a wide range of bike models. - Reliable and Secure Mounting: With tapered heads on both ends, this skewer fits securely into most bike trainer mounting holes. Experience a stable connection during your training sessions, eliminating concerns about slippage for a focused workout. - Durable Construction: Made from high-quality 6061 aluminum alloy, this hub axle is designed to endure rigorous use. It maintains its strength and integrity over time, ensuring long-lasting performance. - Enhanced Frame Protection: The MTB Road Bike Thru Axle Spacers are specifically shaped to match the frame dropouts, providing added protection for your bike frame. This feature safeguards against potential damage during intense workouts. - Practical Use Cases: Ideal for cyclists who frequently train indoors, this axle ensures your bike is securely mounted for effective training sessions. It's also perfect for those who need to switch between different bike setups, offering flexibility without compromising safety. - Easy Installation: The adjustable design simplifies installation and removal, making it convenient for riders who need to quickly set up or take down their bike trainer. This bicycle trainer axle is a must-have for serious cyclists looking for compatibility, durability, and performance in their training equipment.