... %7. Tolerance0.1mm~0.3mm8. Available place:They are used for machinery, chemical industry, petroleum, automobile, coal,electric apparatus, industrial mining ... so on.9. Main performanceUsing them can prolong machine life, reduce maintenance costs, also canreduce shutdowns, downtime and rejects. Furthermore, they ... the use).Hardness or duro.Tolerence.Color.Quantity dust cover for trucks