Thank you for viewing. This is a Sunbox bag supporter. It was stored in a closet with almost no use. From the HP below: Product Description This is a saddlebag supporter specifically designed to support saddlebags. It can be easily fixed by simply clamping the saddle rails from above and below. The upper part of the clamp is an aluminum block, but the main body is SUS304 stainless steel. When transporting vertically, you can leave the bag supporter attached. It fits perfectly with Saddlebag Type 10 and 11. Weight: 295 grams #Randonneur #Sportif #Demontable #Rinko (Bike Transport)