This is a rear box option from Yamaha's Y's Gear. It was used on a AY01 JOG. It comes with two keys. There is some dirt inside the case, but it shouldn't affect its use. You can attach and detach the box with one touch by securing the base to the carrier. If you can secure the base to the carrier, I think it can be used on any vehicle. Remove the two small Phillips screws in the center of the base to reveal the carrier mounting section. Please check the dimensions from the screenshot from the official page.