A pair of top clamps for the Cardas CPBP single-knob binding post, pre-drilled with 4mm holes, allowing the CPBP to be used with banana plugs. Price ($20) is for a pair (ie, 2 of these) (P33.79 X 2)CPBP Top Clamp Pre-Drilled (pair)$20.00PriceQuantityAdd to Cart