12 SPEAKER Pre-installation 4 x 6 "96 x 156 mm 60W 4 ohm. piezo suspension foam tweeter. 45 mm depth -1 SPEAKER 91X155 -100MM 2-way coaxial speaker. - Membrane treated. -Foam suspension -Magnetic Group -Tweeter Piezoelectric -Max power VERY IMPORTANT, READ BEFORE YOU BUY: If you intend to have your item short and free, please choose other sellers as we cannot assure you that point. Thanks for understanding.