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Xifeng20and straight shank hand reamer with 345678910111213141516H7

discount 70% in 2018-09-24 to 2018-09-26
price: USD$ 5.04
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
Minimum Order Quantity:2
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Product name:Straight shank hand reamer



Texture of material:High carbon steel

The accuracy level of hand reamer is: H7H8H9D D4 

DD4 is the old standard, and H7H8H9 is the new standard.
The levels are: (high to low permutation) H7 > D > H8 > D4 > H9
Reamer tolerances are generally add size (commonly known as silk)
 10 mm.
 D class 10.01 mm
 D4 class 10.02 mm
 H7 class 10.005 - 10.01 mm
 H8 class 10.01 - 10.015 mm
 H9 class 10.02 mm
 The blade is H long than D times a prefect