... .4 quality:ISO90005 delivery: great stock and ready goods6 Bore diameter: 1mm - 1800mm7 Precision level: P4, P5, P6, P0 or ABEC7,5 ... . Material: GCr15, SiMn etc8 feature: low noise, long life ,high precision,9 apply: machine tools, electrical ,railways,automotive,construction machinery and ...