Description:  This round needle file set is the smallest I have found.  The 4 varied sizes (0.8mm to 1.5mm) gets you down into the smallest of areas.  Less than half the size of our micro needle files, these files are difficult to find but a must have for everyone who works on small pieces.  Coated with diamond grit they can work on all materials.
 
Approximate Size:  4" overall length, 1 1/2" long file portion, 0.8mm to 1.5mm diameter
Material:  Diamond coated steel
 
Made In China