2 pcs 2.2 inch square 2 way speaker box terminal cup with banana plugs, screw binding plug Just what you need for your subwoofer box construction. It's quite a thicker, tough plastic, so it's great with the negative pressure! If you are looking for terminals and want to use banana clips, you should add them. It is a great price-performance protector for speaker box clamp cups with tie points. Material: Abs base + copper clip Color: Black Total diameter: 56mm (2.2 inch) Cutout diameter : 49mm (1.93in) Top Depth: 20mm (0.78in) Mounting Holes: 2 Size: 57 x 57mm . High-quality plastic and copper contacts, gold-plated contacts for optimal signal transmission! Screw clamps ensure tightness and secure connection. Positive (red) and negative (black) display to ensure proper wiring. Easy to install and adjust enough depth to be able to lay the back of the speaker without pinching the connections. 4 x 2-way speaker terminal box (speakers not included). Please check the size before ordering. Tip: Please allow a slight size deviation due to manual measurement. Banana connector 4 mm Specifications High quality plastic and copper connectors Package includes: