This is a brand new boxed set of 30 different 2.9mm sized burrs 
To fit smaller rotary tools 
From there Pro Craft range which are for professionals 
Complete in plastic storage case 
30 assorted shapes ideal for Grinding, scribing, sharpening etc and much more 
For materials such as Glass, Cristal, Ceramics, Metals, Rocks, Gems, Carbide, Brick, Steel, Wood Etc 
Grit: Medium (120-150) 
Shank Diameter: Approx. 3mm