Red Black 5mm Thread Dual Banana Terminal Binding Post for Car Speaker Amplifier. Product Name: Banana Binding Post; Material: Plastic, Metal Package Content: 1 x Banana Binding Post Shell Color: Red, Black Dimension: 4.6 x 3.5 x 1.5cm/ 1.8″ x 1.4″ x 0.6″(L*W*H) Thread Diameter: 5mm/ 0.2″ Compact, reliableanddurable. Easy installation with screws locking. Made of metal and plastic material, a great terminal for wire connecting. 5mm Thread Dual Banana Terminal Binding Post for Speaker Amplifier. These banana binding posts are commonly used on electronic test equipment to terminate (attach) a single wire or test lead. They are also used on car loudspeakers, audio amplifiers as well as other electrical equipment. While we aim to supply accurate product information, it is sourced by manufacturers, suppliers and marketplace sellers, and has not been provided by Overstock.