Package: You will get 2pcs splice cable connector. Material: Made of copper nickel plating, strong and durable, not easy to rust. Size: 30mm; Diameter: 12mm/10mm; Inner diameter: 8.5mm/5.8mm. This connector is for a heavy duty barrel splice connector suitable for 4-6 AWG or 4-6 Gauge cable/8-10 AWG or 8-10 Gauge cable. This is a perfect item for anyone that wants to extend their power cable. Material Copper nickel plating Size 30mm Diameter 12mm/10mm Inner diameter 8.5mm/5.8mm Type Splice cable connector Brand Unbranded/Generic MPN TJ4894927303087 .