Ceramic turning insert, designed for machining cast iron (CI) materials. Specifications Insert Type: Negative triangular (ISO SPCN) Size: 090408 (9 mm inscribed circle, 4.76 mm thickness) Corner Radius: 0.8 mm Grade: SL500 Coating: Uncoated Material: Ceramic (aluminum oxide-based) Clamping: Hole for clamping (screw or clamp type) Application: Turning of cast iron materials