This unit is an FR-301-81 which is the version for Japan with a supply voltage of 100v. If you want the US version its FR-301-03/P which has a supply voltage of 120v.

Is there is difference between a hakko fr-301 and hakko fr-301-03p?

The FR-301 is the base tool while the FR-301-03P is the base tool with a specific size tip included.

Does this come with the carrying case?

Yes, it does come with a hard plastic gray carrying case.

Will this work with a ksgr soldering iron base ?

not sure which model ksgr you have but i use the GJ ST-90 pro station and it is a larger base and works great...I bought one on amazon for 33.00 dollars

ASIN	B07BKSLLG9
Additional Features	Portable
Best Sellers Rank	#89,888 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #707 in Soldering Irons
Brand	Hakko
Brand Name	Hakko
Customer Reviews	4.3 out of 5 stars 274 Reviews
Handle Material	Plastic
Head Style	Pencil
Heating Element	Ceramic
Included Components	simple iron holder, carrying case, various nozzles
Item Weight	1.36 kg
Manufacturer	Hakko
Model Number	FR-301
Power Source	Corded Electric
Special Feature	Portable
Specific Uses For Product	Industrial Use
Style Name	Pencil
UPC	641328076416
Upper Temperature Range	500 Degrees Celsius
Wattage	98 Watts

Hakko FR-301 Portable Desoldering Tool

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