1" Screw-On 150 Watt 8 Ohm Compression Driver *Sold as each, NOT in pairs. 
 
The Massive Audio 12V Pro PAT220TI @ 300W, 8 Ohm 44.4mm is a 1 3/8" screw mount that comes in at 110dB. This driver uses spring loaded connectors and utilize a high power rear "Fin" designed heat sink for cooler running. "On a Stage or in a Car Massive Drives it Home!"