Description Professional manufacturing, high precision, and good reliability. Made of ABS and zinc alloy material, gold plating process, anti-corrosion and high strength for maximum durability, durable in use. Wide application. Suitable for audiosubwoofer audio modification. Features -Color:As shown -Material:ABS, zinc alloy -Size:7.50X7.50X4.80cm/2.95X2.95X1.89in -Exterior diameter: 75mm /~3 -Cut Out diameter: 48mm / ~ 1-7/8 -Wall screw hole distance: 43mm/1.69" -Made of zinc alloy and abs material, gold-plated contacts, it is nice for optimal signal transmission. -Sophisticated production, with good performance and with stable quality, anti-aging, heat and corrosion resistance, brings you more convenience. -This speaker box terminal is easy use, it is quick connect and disconnect, easy to install and use. -Make it easy to connect speaker wire to your speaker or subwoofer box due to its binding post terminals. -This speaker junction box connector is suitable for car, ship, home audio-visual subwoofer audio modification.Package list: 2 x speaker box terminals 2 x seal rings 8 x screws