25 Jul 1.0-4.0mm Ball Bearing Steel Ball Bearings Roller Beads HOBBY DIY
Description: Material: Carbon Steel Q235 / Bearing Steel Gcr15 Diameter: 1.0mm , 1.2mm , 1.5mm , 1.6mm , 2.0mm , 2.4mm , 2.5mm , 3.0mm , 3.5mm , 4.0mm , 2.80mm , 3.2mm Hardness: HRC60 Tolerance: ±0.002mm Quantity specification (for reference only) 1.0 mm steel...