Prima Classic Carbide burs are used for the preparation of the conservative single surface cavities and for interproximal cavities in anterior teeth (class III).
It is used to gain root canal access of both anterior and posterior teeth.
The burs are brazed in the neck as opposed to the base of the head and the carbide neck provide optimum concentricity and strength.
The shank is made of stainless steel which allows it to be autoclaved numerous times without risk of corrosion.