Model Number: FL001 Brand Name: JLH Key Specifications/Special Features: Flanged ball bearings are available open, shielded or sealed. With bore sizes as small as 1mm. The smaller sizes are sometimes referred to as instrument bearings.1) Material: Chrome steel or carbon steel2) Cage: Steel3) Ball: steel4) Precision: P0/P2/P4/P5/P65) Vibration: V1/V2/V3/V46) Clearance: C0/C2/C3/C4/C57) Noise level: Z1/Z2/Z3/Z48) Application: precision instrument, low noise electromotor, automobile and motorcycle, etc.