Welding Electrode 1) all ranges of electrode available 2) diameter:2.0 4.0mm or as per customers' request 3) length:300/350mm or as per customers' request 4) can be used in various places: cylinder covers, engine bases, gear cases, lathe guide rails about us: We are NINGBO ZEHEN INTERNATIONAL TRADE CO., LTD, which is a leading company of exporting welding equipment & tools and relevant series in China, owning the manufacturer of ZENYUAN WELDING & MACHINERY CO., LTD which specializes in producing cutting torch, regulator & welding accessories over 18 years.