6-1/2"e; DS Series 2-Way Car Speaker System Peak: 100 watts RMS: 50 watts Treated paper cone material Black foam surround 1"e; Black Mylar dome tweeter 4 ohms impedance Sensitivity: 86 dB Frequency Response: 80-20,000 Hz Top-Mount depth: 2"e; Bottom-Mount depth: 2-5/16"e; Tweeter Protrusion: 1/4"e; Includes mounting hardware and screws