... contral 5. Deliver in time 1.superior quality long life2.trust worthy3.precision level:P4 P5 P6 P04.quality standard:ISO90005. ... delivery: great stock and ready goods6 Bore diameter: 1mm - 1800mm7 Precision level: P4, P5, P6, P0 or ABEC7,5,3, ... 15. Material: GCr15, SiMn etc8 feature: low noise, long life ,high precision,9 apply: machine tools, electrical ,railways,automotive,construction machinery ...