This terminal board was designed for custom applications, where a replacement of the original speaker board is required. Simply press down the terminals and insert speaker wire for direct contact. Rear side requires Spade Connectors, Mini Spade Connectors or direct soldering of a speaker wire Suitable for using , in hotel, hall or the other places you want to set a speaker. Easy to mout with 4 mounting holes. 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. Product Name : Binding Post Terminal Board Connector Type : Screw Type Binding Post Color : Black Plate Color : Black Material : Plastic and Metal Screw Hole Diameter : 4mm or 0.16 inch Plate Size : 57 x 57 x 25mm or 2.2 inch x 2.2 inch x 1 inch (L x W x T) Net Weight : 220g Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.