{"product_id":"amoolo-3-8-inch-cobalt-drill-bit-set-5-pack-m35-hss-for-hard-metals-stainless-steel-cast-iron","title":"Amoolo 3\/8-Inch Cobalt Drill Bit Set (5-Pack) – M35 HSS for Hard Metals, Stainless Steel \u0026 Cast Iron","description":"\u003ch2\u003eAmoolo 3\/8-Inch Cobalt Drill Bit Set: Power and Precision for Hard Metals\u003c\/h2\u003e\n\u003cp\u003eMeet the Amoolo 3\/8-inch cobalt drill bit set—a five-piece collection designed to tackle hard metals with reliability and control. Built with M35 cobalt high-speed steel and a durable 3\/8-inch diameter, these bits are sized for common power drills and demanding jobs, from stainless steel to cast iron. The flute length of about 92 mm gives you ample bite length for deeper holes while preserving balance in your drill.\u003c\/p\u003e\n\u003ch3\u003eWhy cobalt matters\u003c\/h3\u003e\n\u003cp\u003eThe alloy contains 5% cobalt, which enhances hardness and wear resistance compared to standard HSS bits. In practice, you may notice prolonged sharpness and consistent cutting across multiple holes in tough workpieces.\u003c\/p\u003e\n\u003ch3\u003eSmart geometry for precise starts\u003c\/h3\u003e\n\u003cp\u003eEach bit is fully ground for a clean cutting edge. The 135° split point helps start the hole accurately and reduces walk, even when you’re working without a center punch. The straight shank is compatible with most chucks, making setup quick.\u003c\/p\u003e\n\u003ch3\u003eVersatility across materials\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHard metals: stainless steel, carbon steel, sheet metal, and cast iron.\u003c\/li\u003e\n\u003cli\u003eNon-metal and softer materials: plastics, aluminum alloys, wood, and other softer metals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReal-world use scenarios\u003c\/h3\u003e\n\u003cp\u003eFrom repairing machinery to assembling metalframes, these bits deliver reliable performance with crisp holes. The combination of hardness and balance helps you work with confidence on busy projects, while the five-piece set keeps options clean and organized.\u003c\/p\u003e\n\u003ch3\u003eBest practices for longevity\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse appropriate speeds and moderate pressure to minimize heat buildup.\u003c\/li\u003e\n\u003cli\u003ePause to cool after several holes and clear chips to maintain cutting efficiency.\u003c\/li\u003e\n\u003cli\u003eWear eye protection and follow standard workshop safety guidelines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and support\u003c\/h3\u003e\n\u003cp\u003eAmoolo backs this set with a 90-day warranty. If you’re not satisfied, contact for a refund or replacement; this offers practical assurance for your workshop toolkit.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What materials can amoolo 3\/8-inch cobalt drill bits drill through?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They handle hard metals like stainless steel, steel, sheet metal, plus plastics and wood with proper technique.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is center punching required for starting holes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No center punch is needed; the 135° split point starts holes cleanly and reduces wandering.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"amoolo","offers":[{"title":"Default Title","offer_id":53093565235311,"sku":"B07XMLB7PV","price":29.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0598\/3087\/files\/amoolo-38-inch-cobalt-drill-bit-set-5pc-pack-shot.jpg?v=1778773501","url":"https:\/\/taskholt.com\/products\/amoolo-3-8-inch-cobalt-drill-bit-set-5-pack-m35-hss-for-hard-metals-stainless-steel-cast-iron","provider":"TaskHolt","version":"1.0","type":"link"}