HHIP WNMG-332 TiN coated carbide insert is used for turning and milling carbon and alloy steels, tool steel and stainless steel. ISO insert number is WNMG060408. I. C. is 3/8". S is 3/16". d is 0. 15". r is . 0315". 0 degree relief angle. Higher heat and wear resistance than uncoated grades.