The geometry of the arrangement of the grades provides 8 cutting edges and produces low cutting resistance.  (Mitsubishi Materials)
Mitsubishi Materials

Insert grades for the WSX series

The positive geometry of the Double Z inserts for the WSX series takes face milling to a new level of usability with 8 cutting edges. The geometry also produces low cutting resistance, making it ideal for all types of machines, from low power through to heavy duty types. This level of cutting resistance is only usually associated with conventional single sided positive inserts and allows end users to increase machine utilization.

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