1Made of high quality steel material, resistant to corrosion and rust, durable in use 2It features high accuracy, stable performance, long service life and high reliability 3The double-sealed ball bearings provides a better running environment for bearing balls 4Deep groove raceway with single column ball bearing ensures the efficient operation of steel balls 5Fine workmanship, exquisite mechanical design and smooth surface provide excellent mechanical propertiesFeatures:Made of high quality steel material, resistant to corrosion and rust, durable in use.It features high accuracy, stable performance, long service life and high reliability.The double-sealed ball bearings provides a better running environment for bearing balls.Deep groove raceway with single column ball bearing ensures the efficient operation of steel balls.Fine workmanship, exquisite mechanical design and smooth surface provide excellent mechanical properties.Specification:Condition: 100% Brand NewItem Type: BearingsHolder and Its Material: Steel PlateUse Characteristics: High SpeedUses: GeneralNumber of Rolling Body Column: Single ColumnRaceway Type: Deep Groove RacewayBearing Material: Bearing SteelRolling Body Type: BallAngle: 15 DegreesSealing Cover: Double-sided SealRolling Body: Steel BallModel: MF126ZZ, MF137ZZ, MF128ZZ, MF148ZZ (optional)Size (Inner Diameter * Outer Diameter * Thickness): (optional)MF126ZZ 6x12x4mm: Approx. 6*12*4 mm / 0.2*0.5*0.2 inMF137ZZ 7x13x4mm: Approx. 7*13*4 mm / 0.3*0.5*0.2 inMF128ZZ 8x12x3.5mm: Approx. 8*12*3.5 mm / 0.3*0.5*0.1 inMF148ZZ 8x14x4mm: Approx. 8*14*4 mm / 0.3*0.6*0.2 inPackage list:10 * BearingsNote:1. Please allow slight error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.