Vacuum Brazed diamond burs are used for engraving and grinding stones.
With vacuum brazed technology, diamonds are 90% exposed like
electroplated diamonds to provide super aggressive grinding, yet they
are more tightly bonded to provide much longer life. They can be used
as dental diamond burs too.
The set comes with 20 pcs of diamond burs with different shapes, in a
solid wood box. Diamonds are 30/40 grit. The diamond burs are sold