General description The DIY Home Car Stereo Screw Cup Connectors are a set of 6 pieces designed for 2-way speaker box terminal connections. These connectors are ideal for DIY home speaker kits and car stereo systems, providing a reliable solution for subwoofer boxes. Technical specifications Total Diameter: about 80mm (3.2in) Cutout Diameter: about 60mm (2.4in) Top Depth: 20mm (0.8in) Material: Plastic, Copper, and gold-plated metal Installation Easy installation with screw locking mechanism Rear connections utilize disconnect connectors Usage Compatible with 4mm banana plugs and spade terminals Positive (red) and negative (black) indicators for correct wiring Ensures a tight and secure connection for optimal signal transfer Other information Package includes 6 * 2 Way Speaker Terminal Box Note: Light reflection and different displays may cause slight color variations Measurement allowed error is +/- 1-3 cm