Check the listing for details. PCD Insert RNGN090300A Turning Milling Tools for Surfacing Cylinder Head、Block. Condition: New. Listed at 40.00 USD. PCD Insert RNGN090300A Turning Milling Tools for Surfacing Cylinder Head、 Block 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. 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