Gs-301 jewelry welder machine/spot welder/welding ring machine Feature: Particularly welding the variety of pure gold, 22k, Pt (platinum) and silver, is also can welding. Welding chain(different shapes of closed small circle) Parameter: Suitable for welding 0.3-0.5mm diameter pt wire, 0.3-0.6mm diameter 24k and silver. Power supper: Ac220v(200-240v), Ac100-120v(to be ordered) Net weight:5kg Total weight:7kg