... glass fiber. 2.Jaw:brass or iron Japanese type Welding Holder,Weld Holder,300A,500A,800A1.Material of handle:Nylon or glass fiber ... requirements of the international markets,we also manufacture other types welding holders,such as Korean type,Germany type,American type,Holland ... ,Yongkang City,Zhejiang Province,China 321300 300A-500A Japanese type Electrode Holder/Welding Plier