Description: Made of high quality and eco-friendly material For speaker input, amplifier output and other applications Color-coded terminals for indication of polarity Durable,use widely Material: Iron Size Chart: Approx. 5.7x4.5x4.1cm/2.24x1.77x1.61inch Package Includes: 1x Amplifier Speaker Terminal Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2cm error in size