1.Made from quality materials 2.Hardened ball guide bushes 3.Custom ball bearing bushes 4.Factory price 5.Fast delivery Item No.: GZ12Item Name: Hardened Steel Brass Ball Guide BushesMaterial: Steel, BrassHardness: 58HRC~Heat Treatment: CarburizedType: ShoulderedColor: OriginalSize: Custom MadeTolerance: Within 0.002mm or as clients' requestsConcentricity: 0.002mmStandard: JIS, DIN, AISI (Custom ...