EEG脳コンピュータインターフェース用乾電極、16フィートの塩化銀電解メッキ銅（Cu/AgCl）電極（OpenBCI用）

2/4/8PCS Musical Sound RCA Connector Plug HiFi 24K Gold Plated RCA Plug Jack Adapter for 6mm Audio and Video Speaker Cable

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Speaker Wire RCA Male Plug Jack Connector to Bare Wire Open End Pigtail RCA Cable for CD DVD player, amplifier, Receivers Repair