Cardas Audio Premium BTS (CGMS RXS) Banana to Spades Speaker Adapter Connectors Plugs with 1/4" Spades - Set of 4 4 Pieces CARDAS BTS (CGMS RXS) Banana to Spade Speaker Adapter PURE COOPER/RHODIUM PLATED FITS STANDARD BANANA AND 1/4" SPADE. Spades opening: 1/4" (6.35mm) THESE ARE "THE BEST AVAILABLE" MADE IN USA