... precision ,long life,low noize 3)Small order can accept Insert bearing SA 206 1)Brand:SKF ,FAG, INA ,TIMKEN ,NSK ... ,6305N/HA,6305-z,6305-2rs ,6305-rs) etc4)Retainer:Copper cage ,Nylon retainer, Steel retainer,Bakelite retainer ,etc5)Quality:ISO9000 ...