For Surfacing Cylinder Head、 Block CBN Insert RNGN090300A Turning Milling Tools Use for block and head resurfacing; vertical milling and boring. Exceptionally high abrasion resistance and good surface finish. Outstanding impact strength and good tool life. PCD for aluminum; CBN for cast iron. Professional manufacturing, standard size, stable and reliable.If you have any questions, please contact us anytime 24 hours. This product is 1PCS Product Description Polycrystalline Diamond (PCD) is a synthetic diamond. PCD Tipped Tools are the best to use in finishing and super fine cutting process at high speed for machining non-ferrous and Non-Metallic material, e.g. boring aluminum, turning aluminum-silicon alloy, milling copper alloys, etc. Also it can bore cast iron, groove wood (Fiberboard, hard wood), drill composites (Graphite-Epoxy, Carbon-Carbon Fiber, Fiberglass Plastic), countersink Ceramics (Sintered, Unsintered), ream Tungsten Carbide (Sintered, Unsintered), cutting Bakelite, Phenolic resins, polypropylene, pottery, microcrystalline glass, etc If you need other models, please contact us for customization. I think we can offer a price that satisfies both parties

Packaging list: 5 pieces of 3/8-inch hard alloy square milling cutters. Material: Microparticle hard alloy. Compared with high-speed steel, carbides have higher hardness, wear resistance, and excellent cutting performance.Coating: AlTiN has a high aluminum content and excellent heat resistance, hardness, and oxidation resistance. HRC 45 degrees: Hard alloy milling tools are good at working on carbon steel (~HB225), alloy steel (HB225~325), pre hardened steel (up to HRC45), hardened steel (HRC40~45), and cast iron. Slot: 4 slots, high rigidity, widely used in shallow groove, profile milling, and precision machining.