The three screws cylinder number is : 3T ,4T,5T,6T. And there are two kinds of the sense of rotaion that is levorotation and dextrorotation. It be same with the T5,T8 straight tube fluorescent lampand
To make 1000-5001 hours high light filament of the megascopic bulb, infrared bulb and the camera bulb , and we can make the filament according to the technical request of the customers . 110V-250V/5~1