Power Acoustik Re-Cone Kit, 12 Dual 4 Ohm Dual 4 Ohm MOFO Series Subwoofer Recone Kit Cloth Laminated Paper Cone Ensures Maximum Woofer Efficiency Poly-Ether Foam Surround Absorbs Distortions And Protects Cone 3" 4 Layer Voice Coil On Anodized Aluminum