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Special offer straight shank hand reamer reamer reamer 3456789101112-40mm manual

price:USD$105.00
discount 70% in 2018-09-21 to 2018-09-23
price: USD$ 73.50
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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Various types of reamer are hand reamer, taper reamer, machine reamer, taper shank reamer, lengthened reamer, alloy reamer and so on.

The accuracy level of machine reamer is: DD4H7H8H9

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)

Example: 10 mm reamer

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

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