Carbide Milling Insert Insert Shape Square Positive Chip-Breaker D51 Grade WKP25 Inscribed Circle .375 In. Insert Thickness .156 In. No of Edges 4 Nose Radius .031 In. Coating CVD Rake 11 Degrees Cutting Direction Right Mounting Style Screw Held Workpiece Material Cast Iron Steel ANSI Number SPMT09T308-D51 WKP25 Application Milling