The Cutting tools for engine parts are diverse, as each has a specific machining process applicable to a certain cutting tool. These are the high-speed steel instrumentation and the carbide inserts, PCD (polycrystalline diamond) cutters, and the ceramic instruments. Carbide inserts are especially common in turning and milling activities because they can withstand high-speed cutting and provide a high wear resistance. The PCD tools excel at manufacturing aluminum parts used on lightweight engines.