What is the difference between gsr12v-300b22 and gsr12v-300fcb22 in the performance/power as a drill and driver? thanks

The same motor different bodies.

Where is this made from?

The country of origin of the GSR12V-300FCB22 is Malaysia. Robert Bosch Tool Corporation utilizes a global manufacturing strategy, which incorporates a global network of suppliers with our worldwide manufacturing locations in regions such as Asia, Europe, and the United States. Our manufacturing facilities around the globe are all owned and operated by the Bosch Group and maintain the highest quality standards. You can be assured that whatever country your Bosch product was made in, it will be made with the quality you would expect from Bosch. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.

What is the maximum drill bit size for the keyless chuck?

It's a 3/8" chuck. It'll even chuck up 1/2" bits with a reduced shank. If you're using spade bits, I've used it with up to 1 3/8", on low speed

The Bosch Power Tools in North America are all 110/120V power rating. If you will use this on 220/240V, you will need to get a power converter to step down the voltage that you have in your area. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.

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Description

🔨 Unlock pro-level concrete drilling with compact power!

COMPACT VERSATILITY - Transforms your 12V Max Chameleon drill into a SDS-plus rotary hammer in seconds
RAPID IMPACT ACTION - Delivers up to 3,800 blows per minute to conquer concrete effortlessly
USER FRIENDLY DESIGN - Includes side handle and depth gauge for precise, comfortable operation
POWER PACKED PRECISION - 850 watts of pure drilling muscle for professional-grade performance
SEAMLESS SYSTEM INTEGRATION - Part of Bosch’s 12V Max Chameleon lineup for unmatched tool adaptability

The Bosch GFA12-H SDS-plus Rotary Hammer Attachment converts your 12V Max Chameleon drill/driver into a high-impact rotary hammer, delivering up to 3,800 bpm and drilling up to 3/8 inch into concrete. Lightweight and compact, it integrates seamlessly with Bosch’s 12V Max system, enhancing versatility and precision for professional and DIY users alike.

Specifications

Brand	Bosch
Power Source	Battery Powered
Maximum Rotational Speed	480 RPM
Color	Black
Included Components	(1) GFA12-H SDS-plus® Rotary Hammer Attachment (1) Side Handle (1) Depth Gauge
Special Feature	Keyless Chuck
Product Dimensions	5.6"L x 4"W x 8.75"H
Material	Blend
Number of Speeds	1
Item Weight	1.04 Kilograms
Maximum Power	850 Watts
Item Torque	265 Inch Pounds
Drill Type	Hammer Drill
Is Electric	Yes
UPC	000346659238
Drilling Capacity Wood	0.38 Inches
Manufacturer	BOSCH
Drilling Capacity Metal	9.53 Millimeters
Part Number	GFA12-H
Item Weight	2.28 pounds
Item model number	GFA12-H
Size	One Size
Style	Rotary Hammer Attachment
Finish	Brushed
Pattern	Solid
Shape	Rectangular
Item Package Quantity	1
Special Features	Keyless Chuck
Batteries Included?	No
Batteries Required?	No

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