Circuit Specialists carries a variety of low-cost BNC adapters — fe-/male BNC to dual banana plugs and fe-/male BNC to dual binding posts —  which feature rugged ABS housing and nickel-plated brass connectors. Our BNC adapters have .161" holes for side stacking and standard .750" center-to-center binding/banana post spacing. You won't find BNC adapters of comparable quality at these kinds of prices elsewhere.