... It is small and convenient for working,Operate flexible and convenient ,handle type design.2, Frequency is 35kHz with original Japanese ... NTK coverter.3, Automatic frequency tracking.4, Especially suitable for 1-15mm spot welding.5, Riveting,spot welding ... the rhinestone on clothes,shoes,trinkets,the spot welding for plastic part,screw implanting,rivet joint.8,widely used ...