... 2. special design 3. competitive price 4. CE certified cavitation rf machine part, skin machine spare parts from our factorySpecifications:Color: red, gray, blue ... ultrasonic cavitation working head.Material: titaniumThe working headparameters: the static capacitance : 4000PFfrequency: 40KHZsonar: less than 15 ohm impedance cavitation rf machine part, skin machine spare ...