we supply high borosilicate glass bulbs, which can be used HID light, street lights and so on 1) Made from borosilicate 4.0 glass 2) Lighting glass bulbs: a) Mercury lighting: BT70, BT75, BT80, BT90 and BT120 b) Sodium lighting: BT62, T37.5 x 180, T37.5 x 208, T46 x 220, T46 x 265 and T46 x 290c) Halogen lighting: ED55, ED75, ED90 and ED120