Our SB-B1015 speakers are excellent choices 4″ speakers. Their dual design handles 200 watts max. power (30 watts nominal) and feature SoundBoss extremely strong and lightweight Injected Molded PolypropyleneTM (IMPP) with MICA composite cone woofer, for improved sensitivity and reduced distortion. You don’t get just basic, run-of-the-mill features either. The conex damper delivers higher power handling and deeper bass, and the 1-3/16″ Piezoelectric tweeter reproduces highs with great performance and musicality. These speakers are designed with a shallow mounting depth for easy install into a wide variety of vehicles. Speaker grilles are not included.