This is a set of a Shark S-1448 and a Power Acoustik AGU fuse holder. Both items are used. They were working before removal, but please note that I have not confirmed their operation for this listing. The AGU fuses are two 30-amp fuses from Audio-Technica. One of the screws for the fuse holder is missing. Velcro is attached to the back. Please purchase only if you understand that these are used items.