Product Name: Luminous Circle Tank Ring; Dimension: 50 x 30 x 4mm/2" x 1.2" x 0.2"(OD*ID*T) Material: Aluminum Alloy; Color: Black Package Content: 1 Pcs x Luminous Circle Tank Ring Fit for: Nissan Luminous Color: Green The ring circle also comes with adhesive double sided back tape for easy and quick installation. Suggested Application Area : Key Ignition Ring. After the need for light source in a dark place until luminous Note: This is an Non-OEM product， accessory only !