This is a seat rail for Recaro seats, made by Kawai Works, compatible with NB Roadsters. I tried to install it in a car once, but it didn't fit the seats I have, so I'm selling it. It's for older Recaro seats, and cannot be used with newer models. There are some minor scratches and dirt from the installation, but it should be fine for practical use. A strength test certificate, which may be required for vehicle inspections, and nuts needed to connect the seat are also included.