good in quality and cheap in price 1)Model:1*20W,1*30W,1*40W2)Lamp tube:T4,T5,T8,T93)Power source:220-230V,50Hz/110-127V.60Hz4)Material:sheet iron,without cover,with reflector5)Ballast:magnetic6)Low power consumption,no flash and long life7)Applications:houserooms,classrooms,shops,supermarkets,plants,luxurious hotels