Stainless Steel MR Miniature Bearing Deep Groove Ball Bearing ID 2/3/4/5/6/7/8mm
ID: 2/3/4/5/6/7/8mm. Material: Stainless Steel. Dustproof, Anti-foreign Matter, Low Friction Resistance, Fast Heat Dissipation, High Temperature Resistance, Strong Stability, Good Quiet Effect, High Rotation Speed.