The item is a set of 2pcs professional and practical 2-way speaker terminal screw cup connectors, which is mainly made of high class material, and designed for DIY speaker and subwoofer boxes. It will bring you optimal signal transfer, and screw up terminals ensure a tight and secure connection. It is easy to install with screws locking and easy to use. Features - Color: Black. - Material: ABS. - Size: 8.00X8.00X2.00 cm/ 3.14X3.14X0.79 inch. - The connector is made of high class material, which has the long service life. - Specially designed for DIY speaker and subwoofer box use. - It will bring you optimal signal transfer, and screw up terminals to ensure a tight and secure connection. - It is easy to install with screws locking and easy to use. - Widely used for surface mount installation in hard wall or open office environments.