Ultrasonic Probe Short leading edge probe: wafer frequency: 2.5~5MHZ, sizes: 6*6,8*12,9*9,13*13, pls contact us! Ultrasonic Probeour short leading edge probe: wafer frequency: 2.5~5MHZ,sizes: 6*6,8*12,9*9,13*13, pls contact us! short leading edge probes