1mm in diameter; Package includes 1500 piece ball Precision grade G100 balls Made of 304 tainless steel with good resistance to corrosion smooth surface precision balls Good corrosion resistance is important, but hardness is not Descriptions: -Precision stainless steel balls are used when conditions require corrosion performance and toughness not available in hardenable stainless steels. -Stainless steel balls offer the precise geometry and fine surface finish that makes them especially useful in valve pumps, nail polish and spray paint bottles for agitation, sprinkling systems, appliance components, casters, drawer slides, locking mechanisms, semi-precision bearings and a host of other industrial and consumer products. -Principal applications are in couplings, valves and pumps. Specification: Material: 304 Stainless steel Precision: G100 (+/-0.005mm) Diameter: 1mm Hardness: