1" Niobium Micro Dome Tweeters</br>Peak Power Handling: 200 Watts / RMS Power Handling: 110 Watts</br>Polished Aluminum Housing</br>Flush, Surface, or Surface Angle Mounting</br>Frequency Response: 3500 - 20000 Hz</br></br>Product Description</br></br>1" Niobium Micro Dome Tweeters. 4 Ohm Impedance. Top-Mount Depth: .75". Peak Power Handling: 200 Watts / RMS Power Handling: 110 Watts.</br><br/>http://www.amazon.com/gp/product/B0007TCA4S