Our choice
Compare DCD771C2
Our choice
Compare BDCDMT120

General

Model

DCD771C2
GCO18SFB
BDCDMT120

Manufacturer

Dewalt
Black & Decker
Black & Decker

Amazon rating

4.6
4.3
4.5

Customer reviews on Amazon

2622
648
598

Product Features

Chuck Size

1/2 inches
3/8 inches
3/8 inches

Chuck Type

Keyless
Keyless
Keyless

System

20V Max
18V Max
20V Max

Style

Drill
Drill/driver
Drill/driver

Cutting

Minimum Cut

6 mm

Maximum Cut

19 mm
1/2 inches
3/4 inches

Max Capacity in Metal

1/2 mm
1/2 inches
1/2 inches

Max Capacity in Wood

19 mm
1/2 inches
1 inches

Max Capacity in Masonry

10 mm
1/2 inches

Power

Power Source

Battery-Powered
Electric-powered
Battery-Powered

Batteries Included

Batteries Required

Battery Cell Type

Lithium Ion
NiCAD
Lithium Ion

Voltage

20 V
18V
20V

Wattage

300 W
1250W
300W

Average Battery Life

13.2 hours
1 hours
1 hours

Spesifications

No Load Speed

0-450/0-1,500 RPM
1200 RPM
1500 RPM

Max Torque

300 inches
412 inches

Torque Settings

16
22

Number of Handles

1
1
1

BPM

250
3500
3500

Noise Sound

Noise Sound pressure

70 dB
70 dB
91 dB

Noise Sound power

110 dB
96 dB
92 dB

Vibration

Drilling

2.5 m/s?
2.5 m/sec?
2.5 m/sec? 

K factor

1.5 m/sec?
1.5 m/sec?

Hammer Drilling

15 m/s?

Special Features

Lightweight

LED Worklight

Always Ready

Dimensions

Size

13.9 x 9.9 x 4.2 inches
13.3 x 9.6 x 3.7 inches
12.5 x 3.6 x 9.5 inches

Weight

3.6 pounds
5.4 pounds
4.3 pounds