The SRK-200NB generation 2.0 Quick Release features many options that conventional ball-locking quick release system do not. The Generation 2.0 is specially engineered with raised sections to prevent the scratching and stretching of the hub while a self locking feature adds increased safety and functionality. Features a new blue body with titanium chrome ring for added style and look. Each unit is made from the highest quality aircraft grade aluminum and is anodized for maximum durability and finish.