{"product_id":"sinyeenglon-cobalt-drill-bits-set-99pcs-m35-hss-for-hardened-metal-stainless-steel","title":"Sinyeenglon Cobalt Drill Bits Set – 99Pcs M35 HSS for Hardened Metal \u0026 Stainless Steel","description":"\u003cp\u003eSinyeenglon Cobalt Drill Bits Set is built for demanding metalworking tasks. This 99-piece collection uses a high-hardness cobalt M35 composition and a hardened full grinding process to help you cut faster and keep edges sharp longer, even when drilling through hardened metals and stainless steel. The kit delivers a responsive feel, clean chips, and steady bite from the first hole.\u003c\/p\u003e\n\u003cp\u003eDesigned for versatility, these bits excel across a range of metals, including stainless steel, cast iron, zinc alloy, titanium, aluminum, and other hard metals. You’ll notice the balance between aggressive cutting and durability, letting you tackle projects without swapping tools mid-task.\u003c\/p\u003e\n\u003ch2\u003eKey benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHardness and speed: Cobalt M35 material delivers fast cutting and extended bit life compared to standard HSS options.\u003c\/li\u003e\n\u003cli\u003eWear resistance: Hardened full grinding increases edge durability and keeps bits sharp under tough material conditions.\u003c\/li\u003e\n\u003cli\u003eVersatile metals: Suitable for stainless steel, cast iron, zinc alloy, titanium, aluminum, and hard metals.\u003c\/li\u003e\n\u003cli\u003eOrganized storage: A sturdy plastic index case keeps drills securely separated for quick access.\u003c\/li\u003e\n\u003cli\u003eClear sizing: The lid bottom clearly marks corresponding sizes for fast selection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e16x 1\/16 in\u003c\/li\u003e\n\u003cli\u003e16x 5\/64 in\u003c\/li\u003e\n\u003cli\u003e15x 3\/32 in\u003c\/li\u003e\n\u003cli\u003e10x 7\/64 in\u003c\/li\u003e\n\u003cli\u003e10x 1\/8 in\u003c\/li\u003e\n\u003cli\u003e8x 9\/64 in\u003c\/li\u003e\n\u003cli\u003e8x 5\/32 in\u003c\/li\u003e\n\u003cli\u003e3x 11\/64 in\u003c\/li\u003e\n\u003cli\u003e3x 3\/16 in\u003c\/li\u003e\n\u003cli\u003e2x 13\/64 in\u003c\/li\u003e\n\u003cli\u003e2x 7\/32 in\u003c\/li\u003e\n\u003cli\u003e2x 1\/4 in\u003c\/li\u003e\n\u003cli\u003e2x 5\/16 in\u003c\/li\u003e\n\u003cli\u003e2x 3\/8 in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eUsage tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eKeep the drill bit vertical to ensure a clean hole and to minimize wandering.\u003c\/li\u003e\n\u003cli\u003eOperate at a low-to-moderate speed: 200–1000 rpm depending on the material.\u003c\/li\u003e\n\u003cli\u003eApply cutting fluid to stay cool and extend edge life during heavy drilling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStorage and care\u003c\/h2\u003e\n\u003cp\u003eThe included hard plastic case protects each bit, helps prevent loss, and makes transport simple and organized.\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 are these bits best suited for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They are designed for stainless steel, cast iron, zinc alloy, titanium, aluminum, and other hard metals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How should I use and care for the bits to maximize life?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Keep the bit vertical, run at 200–1000 rpm, use cutting fluid, and store in the included case.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Sinyeenglon","offers":[{"title":"Default Title","offer_id":53097169617007,"sku":"B0DB8G4ZKS","price":85.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/0598\/3087\/files\/sinyeenglon-cobalt-drill-bits-1-16-inch.jpg?v=1778875415","url":"https:\/\/taskholt.com\/products\/sinyeenglon-cobalt-drill-bits-set-99pcs-m35-hss-for-hardened-metal-stainless-steel","provider":"TaskHolt","version":"1.0","type":"link"}