1,Strong Practicality: Banana plugs connector extension cable wire premium cables and sturdy connectors ensure the best connection every time. 2,4mm Connector: The black banana plug extension cable has 4.0mm male/female connectors on both ends, suitable for any 40‑50A ESC. 3,13cm Wire Length: 4mm banana plugs connector extension cable wire length 13cm for effective extension. 4,Silicone Cord: The banana plug connector extension cable is made of silicone cord, which is heat resistant, soft and durable. 5,Wide Application: 4mm banana plug extension cable can be used for motor ESC connection of RC cars, boats, airplanes, etc. Item Type: 4mm Banana Plug Extension Cable Material: Silicone Wire Cable Color: Black Product Length:Approx. 13cm / 5.1in Joint Diameter:Approx. 4mm / 0.2in Applicable:For RC Car, Boat, Aircraft and Other Motor Esc Connection 3 x 4mm Banana Plug Extension Cable 3 x Heat Shrink Tube 2 x Cable Ties Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.