Thank you for viewing. This is a front carrier for vintage Vespa vehicles. It can be installed on all vintage Vespa models such as PX/P/50S/100/ET3/STD/SUPER/SPRINT/GS/etc... Overall size: Approximately 32cm wide, 38cm long. The upper hook that hooks onto the leg shield has rubber on the back. The spring is strong and can hold magazines, skateboards, and more! If you think the spring is too strong and you can't put boxes on it, you can remove the spring from the beginning. In that case, you can tie the opening with a rubber band or secure it with Velcro. Using a packing rubber band is also retro and looks good. Please note that you may need to slightly bend the mounting hardware for installation. I will not negotiate on the price. Thank you for your understanding. m(_ _)m