{"product_id":"1-9-16-x-21-in-sds-max-rotary-hammer-drill-bit-heavy-duty-masonry","title":"1-9\/16 x 21 in SDS Max Rotary Hammer Drill Bit - Heavy Duty Masonry","description":"\u003cp\u003eIn this review the 1-9\/16 x 21 in SDS Max rotary hammer drill bit is evaluated for contractors and serious DIYers who need a long, large-diameter masonry bit for deep anchor and through-drill work. The bottom line: it is a straightforward heavy-duty concrete bit that delivers reliable drilling performance in brick, stone and concrete because of its 40mm diameter, long 540mm length and a hardened carbide tip that holds up under rotary hammer use. For jobs that require deep holes in masonry the bit's 406mm drilling depth and SDS Max shank make it a clear choice.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e40mm diameter:\u003c\/strong\u003e The large 1-9\/16 in cutting diameter creates oversize holes for heavy anchors and through-bolts without multiple passes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e540mm total length:\u003c\/strong\u003e At 21 in overall length the bit reaches well through thick walls and deep fixtures, reducing the need for extensions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e406mm drilling depth:\u003c\/strong\u003e A practical effective depth of about 16 in lets users place deep anchors or run conduit through concrete and block walls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSDS Max shank:\u003c\/strong\u003e The SDS Max 18mm shank ensures a secure fit in compatible rotary hammers and smooth transfer of impact energy for faster progress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbide tip:\u003c\/strong\u003e The hardened carbide tip and alloy steel body resist wear when drilling abrasive masonry and extend useful life on jobsite tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMasonry focus:\u003c\/strong\u003e Designed specifically for brick, stone, cement wall and concrete work so it performs well on common construction materials.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis drill bit is best suited to professional tradespeople and experienced DIYers who regularly drill large-diameter holes in concrete, block, brick or stone. Its SDS Max shank and long reach make it a practical choice for rotary hammer users who install heavy anchors, through-bolts or sleeves in structural material.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for users who only need occasional small-diameter holes or who own a small SDS Plus hammer; those users should look for smaller diameter bits or shorter lengths. Also, it is intended for masonry work and not for wood or metal drilling applications.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLarge 40mm diameter creates holes for heavy anchoring and utility runs in one pass.\u003c\/li\u003e\n\u003cli\u003eLong 540mm length and 406mm drilling depth reduce the need for extensions on deep work.\u003c\/li\u003e\n\u003cli\u003eSDS Max 18mm shank offers a secure, impact-ready connection for compatible rotary hammers.\u003c\/li\u003e\n\u003cli\u003eCarbide tip and alloy steel construction deliver durability for abrasive masonry surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMixed customer notes on tip strength suggest occasional variability in durability under heavy use.\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for SDS Max hammers, so it will not fit SDS Plus or standard drill chucks without adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e40mm (1-9\/16 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal length\u003c\/td\u003e\n\u003ctd\u003e540mm (21 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrilling depth\u003c\/td\u003e\n\u003ctd\u003e406mm (16 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank type\u003c\/td\u003e\n\u003ctd\u003eSDS Max (shank dia 18mm \/ 0.7 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTip material\u003c\/td\u003e\n\u003ctd\u003eCarbide tip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody material\u003c\/td\u003e\n\u003ctd\u003eAlloy steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eMasonry, brick, stone, concrete, cement wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eFor contractors and experienced DIY users who need a long, large-diameter masonry bit the 1-9\/16 x 21 in SDS Max offers good value through its combination of reach, drilling depth and a carbide tip that stands up to routine concrete work. It is a practical choice when paired with an SDS Max rotary hammer, delivering reliable hole production for anchors and through-bolts while avoiding the hassle of multiple smaller passes.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this bit fit my rotary hammer?\u003c\/strong\u003e\u003cbr\u003eIt fits rotary hammers that accept an SDS Max shank (18mm); it will not fit SDS Plus or standard chucks without an adapter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat materials can it drill?\u003c\/strong\u003e\u003cbr\u003eIt is built for masonry: concrete, brick, stone and cement walls using a rotary hammer in hammer-drill mode.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow deep can I drill with one pass?\u003c\/strong\u003e\u003cbr\u003eThe effective drilling depth is about 406mm (16 in), which is the practical maximum depth for a single pass.\u003c\/p\u003e","brand":"GRIXLEN","offers":[{"title":"Default Title","offer_id":48662878912731,"sku":"B0DNJV2B9L","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51ONFg1FY-L._SL1500_7ee752be-32e7-43e6-899d-f2bb55f63a0b.jpg?v=1778641858","url":"https:\/\/gearmusthave.com\/products\/1-9-16-x-21-in-sds-max-rotary-hammer-drill-bit-heavy-duty-masonry","provider":"GearMustHave","version":"1.0","type":"link"}