High-performance PCD diamond APKT inserts engineered for precision CNC machining of copper and aluminum alloys. Superior polycrystalline diamond cutting edges deliver 10x longer tool life versus carbide. Ultra-fine grain structure ensures mirror-finish surface quality below Ra 0.2μm. Optimized chipbreaker geometry prevents material buildup during high-speed milling (up to 3000m/min) and turning operations. Ideal for aerospace components, heat exchangers, and electronic enclosures requiring burr-free machining. Brazed tungsten carbide substrate provides exceptional thermal stability up to 800°C. Available in standard APKT1604 size with 0.2mm nose radius for detailed contouring. Factory-prepped negative rake angle maximizes metal removal rates in non-ferrous applications.