Check the listing for details. 2x Titanium Compression Drivers, 2" VC, 8Ω, 1000W Bolt-On 2" throat MB Acoustics. Condition: New. Listed at 114.95 USD. YOU ARE BUYING 2 DRIVERS (1 PAIR) The MB Acoustics MB-DS18 is an improved 2" throat High Frequency Compression Driver with a Titanium (CCAW) Voice Coil on a Heat Resistant Kapton (KSV) Former, matched to a powerful 35oz magnet to achieve maximum SPL on a Bolt-On configuration.Bolt-On Compression DriverFrame: Die-cast AluminumVoice Coil Diameter: 2"Voice Coil Wire: CCAWVoice Coil Former: Kapton (KSV)Diaphragm Dome: Titanium2" ThroatMagnet Structure: 35ozAluminum HousingFrequency Response: 1k - 19.5kHzSensitivity: 108dB @ 1W/1mImpedance: 8 ohmsWatts: 1000W maxDimensions: 5.3" diameter x 2.48" depth (135mm x 63mm)Mounting: Standard 4-bolt pattern (Bolt-On)Net Weight: 6 LBS each DriverOriginal Replacement Diaphragm available in the following link: https://www.ebay.com/itm/235053031563