This terminal board is designed for custom applications requiring replacement of the original speaker board. Simply press down the terminals to insert speaker wire for direct contact. The rear side requires spade connectors, mini spade connectors, or direct soldering of speaker wire. Suitable for use in hotels, halls, or other locations where a speaker is needed. Easy to mount with 4 mounting holes. 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" Plate Size: 9.2 x 7.9 x 3.7cm / 3.6" x 3.1" x 1.5" (L*W*T) Net Weight: 117g Package Content: 2 x Binding Post Terminal Board Note: Lighting and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement may vary by +/- 1-3cm.