Clarion CMSW10.1 10-Inch Single 4 Ohm Voice Coil Subwoofer 350 Watts of Maximum Music Power 10? Mica-Injection Polypropylene Woofer Cone Sanoprene Rubber Surround Meets Salt/Fog and UV Exposure Standards (ASTM B117/D4329) High Impact Centrex 814 Grill / Frame Liquid Drainage System Rubber Insulated Tinsel Leads Gold Plated Speaker Terminals Stainless Steel Mounting Hardware Rubber Mounting Gasket