... /ROHS report GradeAvailable Size RangeDiameter tolerance(μm)Deviation from Spherical Form(μm)Lot Diameter Variation(μm)Ra(μm)101/16”~1”0.250.250 ... .4025.4050.80- GradeAvailable Size RangeGauge Interval(μm)Preferred Gauge(μm)101/16”~1”1-10,…..,-1,0,+1,…..,+9281/16”~1”2 ... ”5.00-25,…..,-5,0,+5,…..,+251001/16”~1”10.00-40,…..,-10,0,+10,…..,+402001/16”~1”15.00-60,…..,-15,0 ...