Thru axle is a key component used to secure the wheels on modern road and mountain bikes. Compared with traditional quick-release skewers, it offers higher stiffness and stability, making it especially suitable for disc brake systems, where it can significantly enhance safety during high-speed descents and on challenging terrain. The mainstream thru axle specification on the market is 12 mm in diameter, commonly used for both front and rear wheelsets. It is installed by passing through the hub and tightening with threads, ensuring precise wheel alignment and secure retention.