... NO. : 608zzType: 2RS ZZ ,Z ,RS,OPENHigh quality bearing, 1.high precision, 2.low noise, 3.long-life 4.excellent reliability ... .5.ABEC-9Size: 8*22*7mmMaterial:carbon,chrome,stainless steel,iron,ect.OEM and ... parts . Our products with advanced equipment,mature techniques and with high precision, low noise, longlife and excellent reliability. Our annual output ...