carbide turning insert TPCN32PDTR TPCN32PDTR(TPCN1603PDTR) Indexable Carbide Milling Insert 1/8″ Thick,11 degree relief angle. Material: made of solid carbide with mutilayer coated, offer long life and faster cutting speed, low friction coefficient, good wear resistance For turning and milling carbon and alloy steels, tools steel and stainless steel Screw on triangle style insert with a chipbreaker 10 pieces per box, provides longer tool life than uncoated grades