Features:1. 100% brand new and high quality2. Made of bearing steel material, durable to use.3. Simple structure with stable performance, easy to use4. Low frictional resistance and high speed5. Can be used in gearboxes, instrumentation, motors, household appliances, internal combustion engines, transportation vehicles, agricultural machinery, construction machinery, construction machinery, roller skates, yo-yo, etc. Specification:Condition: 100% Brand NewModel: 6301-ZZCage Materials: Steel PlateBearing Material: Bearing SteelUse Characteristics: High SpeedUsing: GeneralNumber of Rolling Body Columns: Single ColumnRaceway Type: Deep Groove RacewayRolling Body Type: BallAngle: 15 DegreesSealing Cap: Double-Side SealRolling Body: Steel BallInner Diameter: Approx. 12mm / 0.5inOuter Diameter: Approx. 37mm / 1.5inThickness: Approx. 12mm / 0.5in Package List:10Pcs Deep Groove Ball Bearings