Feature:
Made of high quality high speed steel with titanium coating for durable and effortless, exceptionally precise cuts the first time.
Shank diameter 3.1mm(1/8"), easy to insert into most mini-grinding rotary tools including, Craftsman, Chicago, Silverline, GMC, CNC machinery.
Large capacity chip groove, and spiral cutting edge sharp, greatly enhance the efficiency and quality of products.
Using for engraving on a wide range of materials including: wood, aluminum, metal, ABS, acrylic, PVC, plastics etc.

Specifications:
Type: Carbide Rotary Burr Set
Material: High Speed Steel (HSS)
Shank Diameter: 3.1mm / 0.12 inch
Total Length: 38 - 40mm / 1.49 - 1.57inch

Package Included: 10 * Router Bit Milling Cutter

Notes:
1. NOT recommended to use them on hardwood.
2.Size for manual measurement, there may be a 1 to 3 mm error, belongs to the normal phenomenon.
3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!