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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BOSCH GFA12-H SDS-Plus® Rotary Hammer Attachment

BOSCH GFA12-H SDS-Plus® Rotary Hammer Attachment

Product ID: 519437375

Details

Brand
Bosch
Colour
Black
Maximum chuck size
0.38 Inches
Maximum rotational speed
480 RPM
Power source
Battery

⚡850W max power

🔩3,800 bpm impact rate

🛠️3/8 in max concrete drill diameter

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Description

🛠️ Upgrade your drill, dominate concrete — compact power that means business!

ERGONOMIC CONTROL - Includes side handle and depth gauge for precision and comfort on every project.
COMPACT VERSATILITY - Transforms your 12V Max Chameleon drill into a pro-grade SDS-plus rotary hammer.
PRECISION IMPACT RATE - 3,800 blows per minute for rapid, efficient drilling into masonry.
POWER PACKED PERFORMANCE - Unleash 850W of pure rotary hammer force for tough concrete jobs.
SEAMLESS SYSTEM EXPANSION - Integrates effortlessly with FlexiClick® 5-in-1 attachments for ultimate jobsite flexibility.

The BOSCH GFA12-H SDS-Plus® Rotary Hammer Attachment converts your 12V Max Chameleon drill/driver into a high-performance rotary hammer delivering up to 3,800 bpm and drilling up to 3/8 inch into concrete. Lightweight and compact, it expands the FlexiClick® system with added versatility, including a side handle and depth gauge for precision. Perfect for professionals seeking powerful, portable concrete drilling without the bulk.

Specifications

ASIN	B0BNKCQNQP
Best Sellers Rank	837,929 in DIY & Tools ( See Top 100 in DIY & Tools ) 3,863 in Drills
Brand	Bosch
Colour	Black
Customer Reviews	4.8 4.8 out of 5 stars (1,043)
Drill Type	Hammer Drill
Drilling Capacity Metal	9.53 Millimetres
Drilling Capacity Wood	0.38 Inches
Included Components	(1) GFA12-H SDS-plus® Rotary Hammer Attachment (1) Side Handle (1) Depth Gauge
Is Electric	Yes
Item Dimensions L x W x H	14.2L x 10.2W x 22.2H centimetres
Item Type Name	SDS-plus® Rotary Hammer Attachment
Item Weight	1.04 Kilograms
Manufacturer	Bosch
Material	Metal
Maximum Chuck Size	0.38 Inches
Maximum Power	850 Watts
Maximum Rotational Speed	480 RPM
Maximum Torque	3.8 Newton Meters
Model Number	GFA12-H
Number of Speeds	1
Part Number	GFA12-H
Power source	Battery Powered
Special Features	Compact, Keyless Chuck
Speed	3800 RPM
Torque	265 Inch Pounds
UPC	000346659238
Unit Count	1.0 count

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