General description The DIY Home Car Stereo Screw Cup Connectors are designed for use in DIY speakers and subwoofer boxes. This set includes 10 pieces of 2-way speaker box terminal cup connectors, featuring square copper speaker binding posts that accommodate screw terminals and banana plugs. Technical specifications Color: Black Material: Plastic, Copper, and gold-plated metal Total Diameter: about 80mm (3.2in) Cutout Diameter: about 60mm (2.4in) Top Depth: 20mm (0.8in) Measurement allowed error: +/- 1-3 cm 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 10 * 2 Way Speaker Terminal Box Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from the