Metric & British System Carbide Alloy Forstner Bits

5 piece set 15 ~35

 

14 piece set 1/2" ~ 2 1/8"

 

Pieces per set
Specification
5
15, 20, 25, 30, 35
6
22, 23, 25, 28, 35, 53
14
1/2", 3/4", 7/8", 1, 1 1/8", 1 1/4", 1 3/8",
1 1/2", 1 5/8", 1 3/4", 1 7/8", 2", 2 1/8"

Metric System

  

British System
Flute Dia.
D
Middle Shank Dia.
d
Small Shank Dia.
d
Length
L
15
10
8
90
16
10
8
90
19
10
8
90
20
10
8
90
22
10
8
90
23
10
8
90
25
12
8
90
26
12
8
90
28
12
8
90
30
12
8
90
32
12
8
90
35
12
10
90
38
15
10
90
45
15
10
90
50
15
10
90
53
15
10
90
 
Flute Dia.
D
Middle Shank Dia.
d
Small Shank Dia.
d
Length
L
1/2"
8
9.5
90
5/8"
10
9.5
90
3/4"
10
9.5
90
7/8"
10
9.5
90
1"
12
9.5
90
1 1/8"
12
9.5
90
1 1/4"
12
9.5
90
1 3/8"
12
9.5
90
1 1/2"
15
9.5
90
1 5/8"
15
9.5
90
1 3/4"
15
9.5
90
1 7/8"
15
9.5
90
2"
15
9.5
90
2 1/8"
15
9.5
90
 
 

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