{"product_id":"milwaukee-48-89-2521-cobalt-jobber-drill-bit-4-9-in","title":"Milwaukee 48-89-2521 Cobalt Jobber Drill Bit 4.9 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MILWAUKEE 48-89-2521 is a cobalt jobber-length twist drill bit built for hard metal drilling applications. It features a variable helix design that starts at a 35-degree angle and transitions to 15 degrees, promoting rapid chip evacuation and reducing heat buildup at the cutting edge. The 135-degree split point tip provides a self-centering start and eliminates walking on smooth or curved surfaces. At 4.9 inches in length and metric-sized, this bit is suited for professional metalworking tasks where tool life and hole accuracy are critical. Licensed trades and metal fabricators rely on cobalt bits like this when standard high-speed steel falls short.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is designed for use in hard and stainless metals including alloy steels, cast iron, and similar materials that generate significant heat during drilling. It performs in standard twist drilling applications as well, making it a versatile addition to a professional drill index. The metric sizing suits applications where metric hole tolerances are required. Suitable for use with corded or cordless drill drivers, drill presses, and magnetic base drills commonly used in HVAC, electrical, plumbing, and general mechanical trade work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eVariable helix angle (35 degrees to 15 degrees) promotes rapid chip removal and limits heat buildup\u003c\/li\u003e\n  \u003cli\u003e135-degree split point tip for precision self-centering start with no walking\u003c\/li\u003e\n  \u003cli\u003eCobalt construction rated for up to 10 times the service life compared to black oxide bits\u003c\/li\u003e\n  \u003cli\u003eIntegrated chip breaker geometry reduces heat at the cutting edge\u003c\/li\u003e\n  \u003cli\u003eSecure shank grip design resists slipping in the chuck during high-torque drilling\u003c\/li\u003e\n  \u003cli\u003eMetric sizing for applications requiring metric hole dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a jobber-length cobalt twist drill bit compatible with standard 3-jaw drill chucks on corded and cordless drill drivers and drill presses. Suited for hard metal drilling applications across trade disciplines.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed by a qualified tradesperson into a compatible drill chuck secured finger-tight then fully tightened with a chuck key or via keyless mechanism. Always secure the workpiece before drilling and wear appropriate eye protection. Reduce feed pressure when the bit is breaking through the back side of the material to avoid grabbing. Follow applicable workplace safety standards and tool manufacturer guidelines for speed selection based on material hardness and bit diameter.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 4.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Package Length\u003c\/strong\u003e: 6.7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Width\u003c\/strong\u003e: 1.85 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Height\u003c\/strong\u003e: 0.35 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Angle\u003c\/strong\u003e: 135 degrees split point\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle Range\u003c\/strong\u003e: 35 degrees to 15 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSizing Standard\u003c\/strong\u003e: Metric\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSold As\u003c\/strong\u003e: Each\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MILWAUKEE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 48-89-2521\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MILWAUKEE","offers":[{"title":"Default Title","offer_id":51344650862898,"sku":"48-89-2521","price":22.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310512805.jpg?v=1782039146","url":"https:\/\/voomisupply.com\/products\/milwaukee-48-89-2521-cobalt-jobber-drill-bit-4-9-in","provider":"Voomi Supply","version":"1.0","type":"link"}