This is a custom seven rear box for motorcycles, made by Meiho Chemical Industry. It comes with a key and mounting hardware. I've used it for about two years. There is some fading and scratches. Cushion tape has been applied to prevent vibration. It's sized to fit a full-face helmet. External dimensions: 420 x 310 x 280mm Internal dimensions: 385 x 285 x 270mm I will ship via Yu-Yu Mercari delivery. Thank you.