1pcs High Current 30A M5 Type 4mm Amplifier Female Banana Jack Socket Test Binding Post Feature: Surface is nickel plating processing, so it is not brassy. Because copper produce patina easily in the air, nickel is not lively, can prevent the patina, increase the luster, and more wear-resisting Binding post is installed on power amplifier and speakers for connection terminals which is connect with sound box line Specifications: Type : Voltage Regulator Material: Coppper + ABS Color: Red/Black/Yellow/Green/Blue Max Current: 30A Total length: 45mm Panel Cutout Diameter: 13mm Banana Plug Diameter: 4mm Screw Diameter: 5mm Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 Pc x Female Banana Jack Socket _x000D_