Ultrasonic Punching Machine Drilling Hole for Crystal/Glass/Agate/Jade/Emerald/Ceramics Specifications: Voltage: 220v/50Hz Power: 250W Motor cooling method: blower(built-in) Transducer cooling method: blower Working frequency: 17--23K(adjustable) Hole diameter: 0.8mm, 1.0mm, 1.2mm, 1.5mm Application range: crystal, glass, agate, jade, emerald, ceramics, etc. One year warranty |