The adapter (40) includes a second insert seat (46) for receiving a cutting insert (70a, b) of a second predetermined shape and size.

Each insert seat (24) is adapted to receive either a cutting insert (70) of a first predetermined size and shape or an adapter (40).

A cutting insert (12) may be secured in the tool holder, wherein the cutting insert has a recess (17) having a shape that is non-complementary to the shape of the antirotation stop and may be made from tungsten based carbide or cermet.

A round cutting insert, normally made of cemented carbide, for turning operations is provided.

An indexable cutting insert (10) is shown capable of cutting operations over a wide range of parameters such as depth of cut or feed rate.

An indexable cutting insert (2) is shown capable of cutting operations over a wide range of parameters such as depth of cut or feed rate.

The invention concerns a metal-cutting tool with a tool-holder having at least one recess (11) for a replacable cutter insert (14).

The opposite cooperating insertion and bearing surfaces of the cutting insert (12) and slot-shaped recess (11) have a V-shaped cross-section.

The invention relates to an indexable insert (1) to be fastened in a tool holder (K) having a geometrical shape according to DIN 4984 ISO designation system: P - type of fixation: P or M, N - insert clearance angle: N (0°).

Said cutting insert comprises a main blade for comparatively rough cuts and a simultaneously working finishing blade.

At its end region towards its shank (2), the bit (1) has a flat extension (4) in the plane of the bit (1).

The adapter (40) includes a second insert seat (46) for receiving a cutting insert (70a, b) of a second predetermined shape and size.

Each insert seat (24) is adapted to receive either a cutting insert (70) of a first predetermined size and shape or an adapter (40).

A cutting insert (12) may be secured in the tool holder, wherein the cutting insert has a recess (17) having a shape that is non-complementary to the shape of the antirotation stop and may be made from tungsten based carbide or cermet.

A round cutting insert, normally made of cemented carbide, for turning operations is provided.