Spec: 24k gold plated. Pure copper made, non-magnetic. Double screws locking, no soldering. Easy to fit for wire size up to 4mm. Accept speaker wire:8AWG, 9AWG, 10AWG, 11AWG, 12AWG, 13AWG ,14AWG ,15AWG ,16AWG ,17AWG ,18AWG ,19AWG ,20AWG . Color: red and black code. 100% brand new Nakamichi banana plug. Package Included 30 brand new Nakamichi Speaker banana plug connectors. Shipping: Item will be shipped within 1-2 business day. It will take 2-6 business day for delivery. Payment: We accept Paypal only.