W91 Excels in non-sagging property and a best fit for high temperature use and also excels in anti-blackening property. Developed especially for halogen lamp filaments. Applications: Filaments for halogen lamps Type: finishing diameter rangeMG/200mm) D as drawing 0.3-3016 E Electrolytic Polishing 0.4-3016 ES Electrolytic Polishing and straightening 0.4-3016