Check the listing for details. Compression Driver Titanium Tweeter 350W 1" VC, 8Ω, 1-3/8" Screw-On MB Acoustics. Condition: New. Listed at 44.95 USD. MB Acoustics, MB-24 350W 1" Titanium Voice Coil Car & Pro Audio (Screw-On) High Frequency Driver You can use in Car & Pro Audio! The MB Acoustics MB-24 350Wmax Heavy Duty Titanium High Frequency Driver will allow you to achieve the highest audible frequencies. This driver contains a 1” Titanium diaphragm matched to a High Power magnet to deliver high decibels with even low power amplifiers. Specifications:Heavy Duty Titanium Compression Drivers for Car & Pro Audio Screw-On Compression DriverExit Throat Diameter- 1” (25.4mm)MAX Power: 350 WattsRMS Power: 175 Watts1" (25.4mm) Titanium Voice Coil8 ohm ImpedanceFrequency Response: 1 kHz - 20 kHzSensitivity: 101dB (1W/1m)Gold Coated Spring TerminalsMagnet Weight: 12ozMagnet Diameter: 3.15" / 80mmMounting Depth: 1.77mm / 45mm (See photo 4)Overall Height: 2.44mm / 62mm (See photo 4)Thread Size: 1 3/8" - 18 TPIDriver Weight: 1.45 LBSOriginal replacement diaphragm available, model MB24-VC. Sold separately in the following listing:https://www.ebay.com/itm/235089946871