Type of drill bit needed

You need an SDS bit (that’s how it connects to the masonry drill).

I need to drill 1/2 inch holes in granite rocks maybe 4-5 inches deep, will this do the job or do I need a bigger unit ?

Yes this should handle that, I use it to drill 1/2 holes six inches deep in concrete regularly so granite should be fine. Remember the bits are SDS slotted drill system no chuck key required also a bonus.

Can it hammer only with out rotating?

No. 2 modes only. 1. Drill 2. Hammer Drill

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Description

🔨 Drill smarter, not harder — power and precision in your hands!

EFFORTLESS MOBILITY - Lightweight 4.6 lbs design perfect for all-day use in tight spaces
NEXT LEVEL EFFICIENCY - Brushless motor with German-engineered mechanism maximizes runtime and durability
POWER MEETS PRECISION - 1.4 joules of impact energy for lightning-fast concrete drilling
VERSATILITY ON DEMAND - Quick mode selector switch toggles between drill and hammer drill applications seamlessly
VIBRATION WHAT VIBRATION - SHOCKS active vibration control reduces user fatigue for smoother handling

The DEWALT 20V MAX SDS Plus Rotary Hammer Drill (DCH172B) is a cordless, brushless powerhouse delivering 1.4 joules of impact energy and up to 1100 RPM. Weighing just 4.6 pounds, it’s engineered for professional-grade concrete drilling and mounting tasks with advanced vibration control and a versatile mode selector, making it the go-to tool for millennial pros who demand efficiency and comfort on the job.

Specifications

Brand	DEWALT
Power Source	Battery Powered
Maximum Rotational Speed	1100 RPM
Voltage	20
Color	Black, Yellow
Included Components	(1) 360° Side handle, (1) Belt hook, (1) DCH172 Rotary hammer, (1) Depth rod
Special Feature	Brushless Motor, Compact, Cordless, Keyless Chuck, Lightweight, Reverse Rotation, Variable Speed, Vibration Control Handle
Product Dimensions	11.5"L x 8.54"W x 4"H
Material	Blend
Item Weight	4.61 Pounds
Maximum Power	300 Watts
Drill Type	Hammer Drill
Battery Capacity	2 Amp Hours
Is Electric	No
UPC	885911709309
Drilling Capacity Wood	26 Millimeters
Manufacturer	DEWALT
Drilling Capacity Metal	13 Millimeters
Part Number	DCH172B
Item Weight	4.61 pounds
Item model number	DCH172B
Is Discontinued By Manufacturer	No
Size	One Size
Style	Classic
Finish	Brushed
Pattern	Solid
Shape	Rectangular
Item Package Quantity	1
Special Features	Brushless Motor, Compact, Cordless, Keyless Chuck, Lightweight, Reverse Rotation, Variable Speed, Vibration Control Handle
Batteries Included?	No
Batteries Required?	Yes
Battery Cell Type	Lithium Ion

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