This is the KATO Endless Basic Set Master 1. I purchased it several years ago and used it once. I don't currently own any rolling stock, so I'm unable to confirm if it's usable. I turned on the power supply to check, and it seems to be working, so there shouldn't be any problems. However, please understand that this item has been stored personally, so please purchase only if you are okay with that. The condition is quite good.