This is a BOSS FV-500H volume pedal. It's a high-impedance model that can be used with guitars and basses, and it can also be used as an expression pedal via the EXP jack. It's made of aluminum die-cast and is very sturdy. It's a used item, so there is some age-related wear, but there is no significant damage. Operation has been confirmed, and it comes with the original box. Please check the photos for the condition.