New one box set of 30 pieces THK Titanium coated 1mm CYLINDRICAL Diamond rotary burrs / points.
We have used HR2 type diamond sands on those burrs. Better quality and cut faster than the ordinary one.
Titanium coating can improve the hardening of the steel. Durable than electric zinc type.
* They will fit your hand drill, drill press & your Dremel® and Foredom® tool with a 1/8" collet.
* Overall length is 40mm to 50mm (1 5/8 inch to 2 inch)
* Shank diameter : 3.00mm (1/8 inch)