Frequency range: 15-100 KHz Ratio of ranges: 0.2:1-1:15 Material: alloy steel, aluminum, titanium alloy Frequency range: 15-100 KHzRatio of ranges: 0.2:1-1:15Material: alloy steel, aluminum, titanium alloyConnection screw: Can be made at requestsSurface finish: Blackening, polishing, chrome plated ultrasonic transducer booster welding weld oscillator piezoelectric