Material: Made from cast iron, with excellent electrical and magnetic conductivity, and creating simple and smooth linesnCoils: Adopts the newly imported 10-wrap solenoid valve technology. The backseat has strong magnetic absorptionnCraft: The frame is cut and processed by precision line, to guarantee the accuracy of the dimensions by avoiding the dimension error of manual machinenHigh accuracy, stable working speed and high strength that allows it to work for 4 hours at a stretch without any heatnDesigned for use with all kinds of needles, tubes, grips, and power suppliesn