1、Red and black conjoined power amplifier binding post, thread tightening, convenient to use 2、The screw nut is made high grade alloy, which can protect against corrosion and ensure the highest quality audio with no distortion 3、Color coded black/red for maintaining proper polarity 4、Applicable to professional power amplifier, stable performance, compact, reliable and durable 5、Connection mode: use with 4 mm banana plug connection,or directly press cable Features: 1. Red and black conjoined power amplifier binding post, thread tightening, convenient to use. 2. The screw nut is made high grade alloy, which can protect against corrosion and ensure the highest quality audio with no distortion. 3. Color coded black/red for maintaining proper polarity. 4. Applicable to professional power amplifier, stable performance, compact, reliable and durable. 5. Connection mode: use with 4 mm banana plug connection,or directly press cable. Specifications: Material: Alloy + Plastic Quantity: 4PCS, 8PCS, 10PCS (Optional) Connection Type: Thread Tightening Size: Approx. 3.5 x 1.5 x 4.5 cm / 1.4 x 0.6 x 1.8in Weight: Approx. 101-252g Package List: 4 x Conjoined Terminal Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.