ITEM NAME:2 pc Audio Silk/Polymer Composite Dome Tweeters Kit (1 Pair, Black) Description: Brand new and high quality. Tweeter kit with 500watts maximum power handling. Equipped with a magnet for clear, detailed highs. Flush surface mount swivel cups allow placement flexibility and optimization. High sensitivity and smooth, extended frequency response Specification: Frequency response: 5000-20000Hz Impedance: 4 ohms Efficiency: 92dB /w/m Size: Approx(DxL)40x34mm/1.57x1.34Inch Wire Length:300mm/11.81 Inch Power:500W Voltage:12V DC Package Includes: 2 Pieces Dome Flush Speaker 4 Pieces Screws 1 Piece Line Note: Please allow 0.1-0.5 inch difference due to manual measurement.(1 inch=2.54cm) Wish you have a pleasent shopping . SKU: DMO0012438152027535.Tweeter kit with 500watts maximum power handling. 1 Piece Line. Efficiency: 92dB /w/m. Impedance: 4 ohms. 4 Pieces Screws. Frequency response: 5000-20000Hz.