Structure: Deep Groove Type: Ball Brand Name: OEM Bore Size: 10 - 12 mm Outside Diameter: 21 - 35 mm Model Number: 6000 series, 160series Precision Rating: P0, P6,P5,P4 (ABEC-1,3,5,7,9) Seals Type: OPEN, Z, 2Z, RS, 2RS, RZ, 2RZ Number of Row: Single Row Place of Origin: Jiangsu, China (Mainland) Material: SI3N4 Vibration lever: V1,V2,V3,V4 Cage: steel/brass/nylon Noise level: Z1, Z2, Z3 Service: OEM available Free samples: Available Stock: Rich Delivery: 5-25 days