... /ROHS report GradeAvailable Size RangeDiameter tolerance(μm)Deviation from Spherical Form(μm)Lot Diameter Variation(μm)Ra(μm)101/16”~1”0.250.250 ... ”~1”25.4025.4050.80- GradeAvailable Size RangeGauge Interval(μm)Preferred Gauge(μm)101/16”~1”1-10,…..,-1,0,+1,…..,+9281 ... ,sliding,blocks,toys.Any further Information,Plz contact us! Low Price High Quality Bearing Steel Balls