1.Needles retainers K series 2.Bore Size:5- 55mm. 3.Outside Diameter: 9 - 63 mm 4.Large ... High accuracy.3. Needle roller bearing.4. ISO9001:2000 Quality.5. OEM service.6. Favorable price.7. Low friction.Applications: ... ABEC3,ABEC5,ABEC7,ABEC9,P0,P6,P5,P4,P2Delivery time: 5-20days for standard,30days for non-standard .Payment terms: ... to customers' requirment. Precision Needles and retainers K series