uxcell Metal Body Speaker Banana Connector Binding Post Socket 4mm 30pcs Black Red Product Name : Binding Post;Material : Plastic, Metal Fit for : 4mm Banana Connector ;Main Color : Black, Red, Silver Tone Thread Dia. : 3.5mm/0.14";Size : 33 x 12mm/1.3" x 0.47"(H*D) Net Weight : 155g Package Content : 30 x Binding Post