ITEM NAME:10Pcs Welding Pin Pulse Welding Needle Suitable for Sunkko Spot Welding Pen H3W5 10Pcs Welding Pin Pulse Welding Needle Suitable for Sunkko Spot Welding Pen H3W5 1.to avoid the sticky electrode phenomenon. 2.pieces of non-yellow solder, appearance of welding joints. 3.to eliminate the phenomenon of welding sparks. 4.superior electrical conductivity and thermal conductivity. 5.good high temperature performance. Usage:For HB-70B/71B/71A/70A...Spot welding pen Rated Capacity:other Max. Welding Thickness:other Rated Duty Cycle:other Weight:0.2kg Features:Pulse spot welding machine welding pin Features a:Pulse spot welding machine welding needle Suitable for spot welding pen:HB-71A HB-70B HB-71B Suitable for other DIY:And a variety of 18650 battery welding DIY spot welding machines Fit for:Sunkko Spot welder 709A 709AD colour:copper Material:Alumina copper Size:Length:9mm Diameter:1.5mm Package Contents: 10 * welding pins