because when you say the blacklight that implies it is the lamp and bulb, if it was just the bulb you would have to say it was the bulb not the light since light implies the whole thing together
If I win could you relist instead? I thought from your pictures, title and description that I was bidding on the whole blacklight and not just a bulb. I don't own a blacklight to put the bulb in and was looking for the whole blacklight