●[Anti-Theft] 7-Lobe Pin Enhanced security, prevent removing wheels by hands. (7-Lobe key wrench attached) ●[Enhanced Design] Specially designed fixed spring mechanism that keeps the springs securely in place during tire changes and other maintenance tasks. ●[Durable]Great Quality Hub quick release ensures for long time use ●[Size] Skewer: Front:112mm /Rear:148mm;Binder Bolt: M6x45mm ●If you have lost your key, you can purchase our product with ASIN: B0BXX27G7K. Ensuring that you can continue to use your Locking Skewer.