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.

ASIN	B084Q4143Y
Amperage	2 Amps
Batteries	2 Lithium Ion batteries required. (included)
Batteries Included?	Yes
Batteries Required?	No
Battery Capacity	2 Amp Hours
Battery Cell Type	Lithium Ion
Best Sellers Rank	#100,569 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #184 in Power Drill Drivers
Brand	Bosch
Color	Black
Date First Available	March 7, 2020
Drill Type	Basic Drill
Finish	Brushed
Included Components	-- Other --
Is Electric	Yes
Item Package Quantity	1
Item Torque	300 Inch Pounds
Item Weight	0.01 ounces
Item model number	GSR12V-300FCB22
Manufacturer	Bosch
Material	Plastic
Maximum Chuck Size	13 Millimeters
Maximum Power	850 Watts
Maximum Rotational Speed	1750 RPM
Maximum Torque	300 Inch Pounds
Number of Speeds	2
Part Number	GSR12V-300FCB22
Pattern	Solid
Power Source	Battery Powered
Product Dimensions	4.5"L x 2"W x 7.1"H
Shape	Rectangular
Size	4.5" in
Special Feature	Compact, Variable Speed
Special Features	Compact, Variable Speed
Speed	7500 RPM
Style	Industrial
UPC	000346638264
Voltage	12 Volts
Warranty Description	Bosch 12V Max cordless power tools and 12V Max chargers and batteries are covered by a three year limited warranty

GSR12V-300FCB22 12V Max Drill/Driver with 5-In-1 Flexiclick® System with (2) 2.0 Ah Batteries

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