{"product_id":"milwaukee-48-20-4370-spline-drill-bit-1x16-in-4-cutter","title":"Milwaukee 48-20-4370 Spline Drill Bit 1x16 in 4-cutter","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MILWAUKEE 48-20-4370 is a spline-shank rotary hammer drill bit engineered for high-production drilling in concrete and masonry. It features a 4-cutter, 4 x 90-degree tip geometry designed to prevent lock-up when the bit contacts rebar. Patented rebar chamfers protect the cutting head and extend service life in reinforced concrete applications. A high-volume flute clears debris quickly, reducing heat buildup and maintaining penetration rate. At 1 inch in diameter and 16 inches in overall length with an 11-inch drilling depth, this bit handles deep anchor and sleeve installations that shorter bits cannot reach. It is installed by licensed concrete and masonry contractors, electricians, and mechanical trades using SDS-spline rotary hammer tools.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for residential and commercial applications where drilling through brick, block, standard concrete, and reinforced concrete is required. Typical uses include anchor bolt installation, conduit penetrations, mechanical sleeve placement, and structural attachment points. The spline shank provides positive drive engagement in SDS-spline rotary hammer chucks, making it a common choice on commercial job sites where production speed and bit durability are critical factors.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-cutter, 4 x 90-degree tip geometry prevents lock-up in rebar\u003c\/li\u003e\n  \u003cli\u003ePatented rebar chamfers extend cutting head durability in reinforced concrete\u003c\/li\u003e\n  \u003cli\u003eHigh-volume flute design promotes fast debris removal and reduced heat buildup\u003c\/li\u003e\n  \u003cli\u003e1 inch diameter with 11-inch drilling depth for deep anchor installations\u003c\/li\u003e\n  \u003cli\u003eSpline shank for positive engagement in SDS-spline rotary hammer tools\u003c\/li\u003e\n  \u003cli\u003eRated for brick, block, concrete, and reinforced concrete\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with SDS-spline rotary hammer tools. Suitable for drilling brick, block, concrete, and reinforced concrete as an OEM-style production bit for trade applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and remove this bit only with the rotary hammer powered off and the tool disconnected from its power source or battery removed. Verify the spline shank is fully seated and locked in the chuck before operation. Eye protection and hearing protection are required when operating rotary hammer equipment on concrete. Inspect the cutting head for carbide damage before each use and replace if chipping or wear is detected.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrilling Depth\u003c\/strong\u003e: 11 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Spline\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutter Configuration\u003c\/strong\u003e: 4-cutter head\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Brick, block, concrete, reinforced concrete\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.71 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUOM\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: 48-20-4370\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MILWAUKEE","offers":[{"title":"Default Title","offer_id":51342713028914,"sku":"48-20-4370","price":73.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310512123.jpg?v=1782004370","url":"https:\/\/voomisupply.com\/products\/milwaukee-48-20-4370-spline-drill-bit-1x16-in-4-cutter","provider":"Voomi Supply","version":"1.0","type":"link"}