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Spiral Bits
Solid Carbide Double Flute Downcut Spirals
Ideal for use when chip removal needs to be pushed down and away from
the router motor. Excellent for templet cutting when downward pressure
is advantageous.
D
B
C
A
A.
B.
Overall
Cutting
Item #
Diameter
Edge Length
85939M
5/32"
5/8"
85940M
7/32"
1"
85941M
1/4"
1"
85942M
5/16"
1"
85943M
5/16"
1"
85944M
3/8"
1"
85945M
3/8"
1-1/4"
85948M
7/16"
1-1/4"
85949M
1/2"
1-1/4"
85951M
5/8"
1-5/8"
85952M
5/8"
2"
85953M
3/4"
1-5/8"
Solid Carbide Double Flute Extra-long Spirals
Suitable for use when long flute length is required. Especially useful for cutting
the front built-up edge on a countertop when a thick, smooth edge is required.
Industrial / CNC bit for high duty cycle applications
D
B
C
A
A.
B.
Overall
Cutting
Diameter
Edge Length
Item #
85922M
1/2"
1-5/8"
C.
D.
Shank
Overall
Diameter
Length
1/4"
2-1/2"
1/4"
2-1/2"
1/4"
2-1/2"
5/16"
2-1/2"
1/2"
3"
3/8"
2-1/2"
3/8"
3"
1/2"
3"
1/2"
3"
5/8"
3-1/2"
5/8"
4"
3/4"
4"
C.
D.
Shank
Overall
Diameter
Length
Spiral
1/2"
3-1/2"
Up
Toll Free: 877-BOSCH-99
Solid Carbide Triple Flute Upcut Spirals
Bits work best on hard-to-route materials under reduced spindle speeds or
horsepower. The upcut yields superior chip removal and a smooth finish.
D
B
C
A
A.
B.
Overall
Cutting
Item #
Diameter
Edge Length
85955M
1/4"
1"
85956M
5/16"
1"
85957M
5/16"
1"
85958M
3/8"
1"
85959M
3/8"
1-1/4"
85960M
3/8"
1-1/4"
85961M
1/2"
1-1/4"
85962M
1/2"
1-1/2"
85963M
1/2"
2"
85964M
5/8"
1-1/2"
85965M
5/8"
2"
85966M
3/4"
1-1/2"
85967M
3/4"
2-1/8"
Solid Carbide Triple Flute Downcut Spirals
Ideal for penetrating hard-to-route materials under reduced spindle
speeds or horsepower. The downcut holds the material and forces chips
down during routing.
D
B
C
A
A.
B.
Overall
Cutting
Item #
Diameter
Edge Length
85968M
1/4"
1"
85969M
5/16"
1"
85970M
5/16"
1"
85971M
3/8"
1"
85972M
3/8"
1-1/4"
85973M
3/8"
1-1/4"
85974M
1/2"
1"
85975M
1/2"
1-1/4"
85976M
1/2"
1-1/2"
85977M
1/2"
2"
85978M
5/8"
1-1/2"
85979M
5/8"
2"
85980M
3/4"
1-1/2"
85981M
3/4"
2-1/8"
bi t s
Router
C.
D.
Shank
Overall
Diameter
Length
1/4"
2-1/2"
5/16"
2-1/2"
1/2"
3"
3/8"
2-1/2"
3/8"
3"
1/2"
3"
1/2"
3"
1/2"
3-1/2"
1/2"
4"
5/8"
4"
5/8"
4"
3/4"
4"
3/4"
4"
C.
D.
Shank
Overall
Diameter
Length
1/4"
2-1/2"
5/16"
2-1/2"
1/2"
3"
3/8"
2-1/2"
3/8"
3"
1/2"
3"
1/2"
3"
1/2"
3"
1/2"
3-1/2"
1/2"
4"
5/8"
4"
5/8"
4"
3/4"
4"
3/4"
4"
119
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