1.Original SKF Bearings 30202J2/Q 2.ISO9001:2000 Bearings 3.Chrome steel 100Cr6 4.8 years supply Bearings SKF Bearings:SKF bearing describe: Greese/OilAs you requirement ,such as SRL,PS2,Alvania R12 and so onSeriesSeries 30200,30300,32200,32300,33000,etc.Ring MatericalChrome Steel,Carbon steel, Stainless steelTolerance gradeGB/T307.1-205ID Size10mm-280mmQuality standardISO 9001:2000 ...