... .size: as you request 4.Packing: box Detailed IntroducingAl2O3+TIO2: >=99% 2) SIO2: <0.15% 3) NaO2: <0.5% 4) Fe2O3 ... .DONGFENG ceramic ball Product sizeØ3 ,Ø6 ,Ø8 ,Ø10 ,Ø13 ,Ø16 ,Ø20 ,Ø25 ,Ø30 ,Ø38 ,Ø50 ,Ø65 ,Ø75 Product Application FieldsInert ...