10 Ago 5.9-9.5mm Steel Ball Carbon Steel / Bearing Steel Ball HOBBY DIY
Description: Material: Bearing Steel Gcr15,GB308-2002 / Q235 Carbon Steel Diameter: 5.9mm , 6mm , 6.35mm , 6.5mm , 6.6mm , 6.747mm , 6.8mm , 7.144mm , 7.938mm , 8.1mm , 8.731mm , 9.525mm Hardness: Carbon Steel HRC50 , Bearing Steel HRC60 Tolerance: Carbon Steel±0.05mm,Bearing Steel±0.02mm...