Boss Audio BL4250 4" Two-Way 250 Watt Blade Speakers Pair of two-way car speakers with the latest high-tech materials and advanced design techniques 250-watt peak power handling (125-watt RMS) 4-inch speakers with 25-ounce magnet structure Poly injection cone material with a butyl rubber surround 3/4-inch mylar dome tweeter for clear highs and maximum peak power handling