The product is a pack of 6 genuine OEM Denso spark plugs, specifically designed for Lexus vehicles such as the GS350, IS250, and LS460. The spark plugs are made with iridium material and have the manufacturer part number FK20HBR11. They are interchangeable with part numbers 90919-01249, 2006-2013, and compatible with models like the RC350, IS F, and GS450H. These spark plugs are made in Japan and are suitable for gasoline engines.