This listing is for a rear trunk lid mounted 3rd brake light for an 87-93 Cadillac Allante convertible. It is in good used cosmetic/operational condition with normal wear. It needs to have the brake light bulb assy replaced, the bulb id bad. It comes without the key for the lock. It measures aprox 4 1/2" in diameter. There is some wear on the Cadillac emblem. Please verify that this is the light your vehicle requires before purchase