When choosing the right size of carbide insert, always determine the largest depth of cut. Consider the cutting length while determining the tool holder entering tool, depth of cut, and machine specification.

The width and length dimensions of rectangular and parallelogram inserts are used instead of the I.C. The size of these inserts is indicated by a two-digit number. A first digit indicates how many eighths of an inch the insert is wide and a second digit shows how many fourths it is long.