1.Different series 2.under our own registered brand:TAIGU 3.ISO9001:2000 4.Type:Open,ZZ,RS 5.samples for free ... Precision RateP0,P6,P5,P4.p2cageStamped steel cage or solid brass cage Shield/closureOpen ball bearing, Z, ZZ, RS, 2RS, 2RZTolerance CodeABEC-1, ABEC-3 ... well as axial loadingFeature*low noise,high precision,long usage life *less coefficient frication*high processing speed*various size and ...