Inverted Cone ,3/32" (2.3mm) shank Diamonds plated burs. 6 pack/ Multi-Use Diamond burs have the similar quality as the most of expensive multi-use diamond burs on the market. SIX burs per package, manufactured with natural diamonds which produce more cutting surfaces than synthetic diamonds; less clogging and durability. One-piece steel shanks with special heat treatment ensure rigidity, strength and precision.