... ballast,also fit for electronic ballast 3,thickness:0.3mm Fluorescent tube Light fixuture,light holder1,. Prove life span over 100,000 ... for electronic ballast.4,fit for T8 fluorescent tube and other energy saving tubes.5,iron thickness is 0.35MM6,inner packing is ... ,outer packing is standard export packing.7,steady and firmly. fluorescent tube light fixture