Specification:Double screws locking, without crimping or soldering.Widely used to ensure a tighter connection of a speaker wire to the binding post in the back of the speaker or in the back of the audio receiver.Create your own high quality charger adapters with these 4mm banana plug connectors.The screw on the side physically secures the wire in the adapter and ensuring electrical conductivity without the need to solder.Item Name: Banana Musical Speaker Cable PlugsMaterial: Copper Core + Aluminium CaseColor: Sent by RandomFeatures: Durable, Banana Plug, Right Angle, DurableOutshell Diameter: 10.8mm/0.43" (Approx.)Connecting Diameter: 4mm - 5.4mm/0.16" - 0.21" (Approx.)Size: 33.8mm x 5.4mm/1.33" x 0.21" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Banana Musical Speaker Cable Plugs