where are these made?

I would say China because of the real poor quality vinyl case. However, the files themselves are really decent. I was an auto mechanic for many years and now I do firearm repair. I am very familiar with a good tool vs a bad tool. I can honestly say these files will impress you. I use them all the time and on some very hard metals. 440, 4130, D2, etc. the files will smooth or cut all those metals. One of them did break but it was my fault. Give them a try.

What material is the abrasive part of the file (ex: stainless steel, carbon steel, steel alloy, etc.)?

High quality carbon steel ensures the service life and using effect of this file

can you use on dentures?

not a dentist but...No I would not even if desperate. It is not the same quality as dental tools and will leave material in the denture that may be toxic for you. Consult your dentist for dental adjustments!

What is the diameter of the small round rasp in this set?

There are two round rasps in the set. According to the pouch they came in the dimensions are 3x140. I checked and that is 3mm in diameter and 140mm in length.

Material	Wood Plastic Carbon Steel Metal
Brand	KALIM
Colour	Red
Product Dimensions	18L x 18W Centimeters
Exterior Finish	Wood
Specific Uses For Product	Shaping, Carving
Special Feature	Easy to Install
Included Components	PVC pouch
Item Weight	80 g
Centre To Centre Spacing	3.5 Inches
Metal Type	Alloy Steel, Carbon Steel
Handle Material	Alloy Steel
Hand Orientation	Ambidextrous
Customer Package Type	standard packaging
Net Quantity	1 count
Number of Items	10
Manufacturer	KALIM
UPC	720226166303 725756092276 720226166167
Country of Origin	USA
Item model number	BB-0011
ASIN	B07PPYWSCY

10Pcs Needle File Set Hardened Alloy Strength Steel Files- Mini Needle File Set Includes Round, Tapered Round, Half Round, Barrette, Crossing, Knife, Equaling, Warding, Square, and Three Square

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