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Roughing End Mill 4 Flute Tungsten Carbide Milling Cutter Bits | ZrN Coating, for Alloy Steels, Hardened Steels\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eSizeBlade diameter 3\/8\", handle diameter 3\/8\", blade length 7\/8\", total length 2-1\/2\".\u003c\/li\u003e\n \u003cli\u003eZrN CoatingThe Zirconium Nitride (ZrN) +Titanium aluminum boron nitride (AlTiBN) coatings ensure stability even at high temperatures and provide superior heat resistance compared to TiAlN, TiN, or TiCN coatings.\u003c\/li\u003e\n \u003cli\u003eHigh Quality MaterialCrafted from 0.6m micrograin carbide, this end mill offers exceptional toughness, durability, and machinability, delivering outstanding performance and great value for its price.\u003c\/li\u003e\n \u003cli\u003eApplicationSuitable for rough machining. High machining efficiency. Good chip removal performance and large chip removal volume. High metal cutting rate. Apply to carbon steel, alloy steel, die steel, tool steel, cast iron, titanium, etc.\u003c\/li\u003e\n \u003cli\u003eTipsTo maximize tool longevity and prevent breakage, proper cutting parameters (feed rate \u0026amp; speed settings) are critical. Our end mill are precision-engineered to perform best within specified ranges. Always reference parameter guidelines in product images.\u003c\/li\u003e\n \u003c\/ul\u003e"}