... 1,High quality with competitive price 2,with magnetic ballast,also can fit for electronic ballast 3,thickness is 0.35MM Light ... fixuture,light holder1,. Prove life span over 100,000 hours2 ... for electronic ballast.4,fit for T8 fluorescent tube and other energy saving tubes.5,iron thickness ... standard export packing.7,steady and firmly. Light tube fixture