Description Pair of 4mm Gold Plated Brass Banana Plugs - One in Red One in Black These 4mm Plug enable a high quality connection in Hi-Fi speaker systems where large diameter cables are used. It can be stacked end-on with other 4mm plugs or cable/plugs up to 7mm can be inserted through the side of the plug and clamp by the screw mechanism. Colour:Red and Black Mounting type:Cable Plating contact:Gold Plating:Gold Size:4mm BRASS These 4mm Plugs enable a high quality connection in Hi-Fi speaker systems where large diameter cables are used. They can be stacked end-on with other 4mm plugs or cable/plugs up to 7mm can be inserted through the side of the plug and clamp by the screw mechanism.