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4 5
* Output rated at full speed
Impacts
Per Min-
ute
0 - 2150
0 - 2200
0 - 2200
0 - 2200
Cat.
No.
9078-20
9079-20
9098-23
9099-20
Average
Torque
Output*
325 ft-lbs.*
240 ft-lbs.*
270 ft-lbs.*
270 ft-lbs.*
Volts
DC
18
18
18
18
Specifi cations
Drive
Shank
3/4"
1/2"
5/8" Hex
7/16" Hex
No Load
RPM
0 - 1350
0 - 1400
0 - 1400
0 - 1400
Symbology
Volts Direct Current
Underwriters
Laboratories, Inc.
Impacts per Minute
Under Load (IPM)
1. Drive shank
2. Forward/Reverse switch
3. Trigger
4. Battery pack
5. Battery pack release buttons
6. Quick change chuck
(Cat. No. 9098-23 and 9099-20)
7. Tool hanger
(Cat. No. 9098-23 and 9099-20)
8. Tool hanger ring
(Cat. No. 9098-23 and 9099-20)
FUNCTIONAL DESCRIPTION
4
3
2
5
Cat. No. 9079-20
1
Cat. No. 9099-20
7
8
6
Cat. No. 9078-20
1
Cat. No.
9079-20
9098-23
9099-20
Quick Change Auger Bits
1-1/2"
1-1/2"
1-1/2"
Quick Change Chuck Capacities*
Selfeed Bits
2-9/16"
2-9/16"
2-9/16"
* Only for use with the 7/16" and 5/8" Hex Quick Change chuck,
standard equipment on the 9099-20 (7/16") and 9098-23 (5/8"),
optional accessory (Cat. No. 48-66-0061) on other models.
4. WARNING! Some dust created by
power sanding, sawing, grinding, drill-
ing, and other construction activities
contains chemicals known to cause
cancer, birth defects or other reproduc-
tive harm. Some examples of these
chemicals are:
• lead from lead-based paint
• crystalline silica from bricks and cement
and other masonry products, and
• arsenic and chromium from chemically-
treated lumber.
Your risk from these exposures varies,
depending on how often you do this
type of work. To reduce your exposure
to these chemicals: work in a well ven-
tilated area, and work with approved
safety equipment, such as those dust
masks that are specially designed to
fi lter out microscopic particles.