... Steel.l We can supply Glass material as, Hard Quartz, corning.l The life time is below, Quality A ... hrs, Quality B is about 350 hrs.l Our products have passed the E4 E-Mark certificated, and meet ... as:Iron,Copper,Stainless Steel and GlassMaterial as:Hard,Quartz,CorningLife time:Qualilty A>=500 hrsQuality B>=350 hrsColor ... for us. Welcome to contact with us! quartz glass halogen bulb h1 clear e4 12v 55w