Class L shafting is designed for use with Super, Super Smart and XA Precision Ball Bushing Bearings.Available from stock and cut to length in most material types and options.Centerless ground for an industry leading cataloged surface finish of 8 Ra max.Roundness within .000080"Straight within .001" per foot cumulative when shipped from the factory.SpecificationsSpecificationsValueCase Depth, Minimum0.080 inClassClass LHardness60 Rockwell C Min.MaterialSteelMaterial, ShaftSteelRoundness0.000080 inStraightness0.001 in per Foot Cumulative (.002 in TIR)Surface Finish8 Ra microinch MaxTaper0.0001 inUPC Number662486922506Weight0.222 lb/inDimensionsDimensionValue[d] Shaft, Nominal Diameter1 inActual Diameter0.9990 / 0.9995 in