Thule passive lock strap - Passive lock Strap provides added security by locking your bicycle strap rack to your vehicle. Features • Round puck installs securely in trunk or hatch, preventing carrier removal • Two steel cables enclosed in nylon for a strong durable strap that won’t scratch your vehicle, bike or carrier Specifications • Weight: 0.4 lb • UPC-A: 091021278622 • Country of origin: China • Model number: 533