Patent ID: 7553113

Claim:
An indexable insert comprising: a body; a base layer disposed on the body; and a wear-indicating layer disposed on a part of the base layer, wherein at least one surface of the body serves as a rake face, at least one other surface of the body serves as a flank face, the rake face being connected to the flank face with a cutting edge therebetween; the base layer has a color different from that of the wear-indicating layer; and the wear-indicating layer is disposed on the rake face and on the base layer, the wear-indicating layer is formed over a region A 2 entirely or over a portion of A 2 , and the wear indicating layer is not formed on a region A 1 that extends to a distance of 0.2 mm or more and less than 4.0 mm from the cutting edge, and said region A 2 is a region excluding said region A 1 from said rake face.