Material: Plastic with corrosion-resistant gold-plated connectors Dimensions: 86mm x 86mm Banana diameter: 13mm Hole inner diameter: 4mm Reliable and practical and The and the back are the same connection, two gold-plated sockets for banana plugs Speakers can connect or connect the cable directly Package Contents: 3 x plug Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.