Product Name : Binding Post Terminal Board Connector Type : Screw Type Binding Post Color : Black & Red Plate Color : Black Material : Plastic & Metal Screw Hole Diameter : 4mm/ 0.16 inch Plate Size : 9.2 x 7.9 x 3.7cm/ 3.6 inch x 3.1 inch x 1.5 inch (L*W*T) Net Weight : 117g Package Content: 4 x Binding Post Terminal Board Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Rear side requires Spade Connectors, Mini Spade Connectors or direct soldering of a speaker wire Simply press down the terminals and insert speaker wire for direct contact. This terminal board was designed for custom applications, where a replacement of the original speaker board is required. Easy to mout with 4 mounting holes. Suitable for using , in hotel, hall or the other places you want to set a speaker.