This is a 3D printed replacement battery cover for some Yamaha instruments, not an original part. It is confirmed working in the DD-6 Drum Machine, but likely fits other Yamaha instruments that run on AA-sized batteries such as some PSS keyboards. The original cover has a very thin foam covering on the inside (see images), however, foam is not included in this listing. The 3D printed part is modeled after an original part and is a great replacement but not an exact recreation. There may be some small difference that don't affect functionality.
