【4-Piece Battery Terminal Connector】: You will receive 2 pairs of car battery terminals, 4 pieces in total. There are 2 red positive terminals and 2 blue negative terminals. These car battery terminals are suitable for connecting and disconnecting the battery in the car terminal. 【Premium Quality】: These quick-release battery terminals are made of high-quality copper and ABS. The battery quick connectors feature a solid connection, are corrosion-resistant, and have good electrical conductivity. In addition, the blue/red ABS cover is insulating, durable, dustproof, and moisture-proof. 【Dimensional Information】: The 12V battery terminals are compact and ideal for installing batteries in small spaces. The inner diameter of the positive terminal (red) is 19 mm; the inner diameter of the negative terminal connector (blue) is 18 mm. This quick-release battery terminal set is suitable for cables with a diameter of 4 mm to 6 mm. 【Easy to use】: Installing car battery terminals typically takes