Legacy LSW157 15-Inch 4000 Watt Legacy Steel Series Woofer Chrome Injection Molded Cone - Embossed Diamond Plate Dust Cap Specially Treated Rubber Edge Suspension - Allen Key Connection Terminals Chrome Steel Basket - High Temperature Dual Kapton Voice Coil Bumped Vented Pole Piece - 4 Ohm Impedance Custom Designed Magnet Boot