... ball bearing lead screw, wheels, toys, bicycles, bearings, trust bearings pulleys, chemical industries, etc.DETAIL SPECIFICATION: ItemSS304 Stainless Steel BallCategory Stainless Steel ... BallMaterialSS304Size2.0 mmGradeG500Hardness ( HRC)HRC58-65ApplicationBicycle, bearing, pulley, slide, handcraft, shelf, luggage, hardware, grinding mediaStandardGB/T-308-2002, GB ...