uxcell 10 x Red Black Hex Head Binding Post Speaker 4mm Banana Jack Coupler Product Name : Binding Post;Material : Plastic, Metal Main Color : Black, Red,Silver Tone;Fit Banana Connector: 4mm Mounting Thread Dia. : 3.5mm/ 0.14";Total Size : 14 x 44mm / 0.55" x 1.7"(D*H) Weight : 115g Package Content : 10 x Binding Post