Set of 4 vacuum tubes Used parts. Operation not confirmed. All items are shown in the photos. Shipping and Notes: Shipped via Yu-Packet Plus. - Colors may appear different depending on your viewing environment. - May be damaged by impact. Please handle with care. - Returns or exchanges due to customer reasons such as incorrect size are not possible, so please confirm before purchasing. - Purchases from those with negative feedback may be cancelled. If you have any questions, please feel free to ask ( ᷇ᵕ ᷆ )