Features 1、High Bearing: 4mm banana plug can bear 32A high current and 1000V voltage, which is capable for home and office use, the pack has 5 black sleeves and 5 red sleeves. 2、Strong Material: Made of PVC and copper material with good transmission performance, good contact performance, and high resistance to plug. 3、Pure Copper Contact Part: Contact parts is pure copper and nickel plated, with small transmission loss and not easy to oxidize. 4、Flame Retardant Sheath: These PVC non slip insulating sheath has a certain flame retardant, can ensure the safety of work. 5、Screw Connection: Adopts screw connection, no need for welding, the tail of the screw wire can also allow welded wire, plug side can even pole interplug. Specification Item Type: 4mm Banana Plug Contact Material: Pure Copper, Copper Plated Nickel Insulation Material: PVC Color: Red Black Application: For Audio Cable For Speaker, TV, Computer, Etc. Weight: Approx.70g/2.5oz Maximum Wiring Diameter: 3.5mm/0.14in Maximum Current: 32A Connection: Screw Connection Package List 10 x Connector 5 x Red Sleeve 5 x Black Sleeve