{"product_id":"crownforce-4-1-4-dry-core-drill-bit-for-concrete-brick-block-fits-4-duct-10-depth-sds-plus-sds-max-hex-adapters-pilot-bit-included","title":"CrownForce 4-1\/4\" Dry Core Drill Bit for Concrete, Brick \u0026 Block | Fits 4\" Duct | 10\" Depth | SDS-Plus, SDS-Max \u0026 Hex Adapters","description":"\u003cstyle\u003e\n.cf-acc details { border-bottom: 1px solid #e0e0e0; }\n.cf-acc details:first-of-type { border-top: 1px solid #e0e0e0; }\n.cf-acc summary { display: flex; justify-content: space-between; align-items: center; cursor: pointer; padding: 14px 2px; list-style: none; font-weight: 700; }\n.cf-acc summary::-webkit-details-marker { display: none; }\n.cf-acc summary:hover { opacity: .7; }\n.cf-acc .cf-arrow { display: inline-block; margin-left: 16px; font-size: .75em; line-height: 1; transition: transform .2s ease; }\n.cf-acc details[open] .cf-arrow { transform: rotate(180deg); }\n.cf-acc .cf-body { padding: 0 2px 16px; }\n.cf-acc table { width: 100%; border-collapse: collapse; }\n.cf-acc td { padding: 6px 0; border-bottom: 1px solid #f0f0f0; }\n\u003c\/style\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe vent hole bit that actually fits the duct.\u003c\/strong\u003e\u003cbr\u003e\nHere is the problem with 4\" core bits: a 4\" hole is too tight for a 4\" duct. Guys drill the hole, the duct won't pass, and they're back on the wall re-drilling. The CrownForce CF-WC-108 cuts a true 4-1\/4\" (108mm) hole so standard 4\" dryer vents, bath fan ducts, and PVC pass through clean on the first try.\u003c\/p\u003e\n\n\u003cdiv class=\"cf-acc\"\u003e\n\n\u003cdetails open\u003e\n\u003csummary\u003e\u003cspan\u003eFits the drill you already own\u003c\/span\u003e\u003cspan class=\"cf-arrow\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"cf-body\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSDS-Plus adapter.\u003c\/strong\u003e Fits your rotary hammer (rotation-only mode).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSDS-Max adapter.\u003c\/strong\u003e Fits larger demo-class drills.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/2\" hex adapter.\u003c\/strong\u003e Fits standard drill chucks. Use a drill with a side handle. A bit this size has serious torque.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan\u003eBuilt to last on real jobs\u003c\/span\u003e\u003cspan class=\"cf-arrow\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"cf-body\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaser-welded diamond segments, 10mm tall.\u003c\/strong\u003e Fused to the barrel, not glued. They hold up under heat and won't fly off mid-cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10\" working depth.\u003c\/strong\u003e Clears a full exterior wall assembly in one pass. Brick, block, or stucco over sheathing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry cutting, rotation only.\u003c\/strong\u003e No water hookup. Drill from a ladder. Hammer function OFF.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan\u003eSpecs\u003c\/span\u003e\u003cspan class=\"cf-arrow\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"cf-body\"\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-1\/4\" (108mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10\" (250mm+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5\/8\"-11 (standard US)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSegment height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10mm laser-welded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDry, rotation only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterials\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConcrete, brick, cinder block, masonry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan\u003eCommon jobs for this bit\u003c\/span\u003e\u003cspan class=\"cf-arrow\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"cf-body\"\u003e\n\u003cp\u003eDryer vents. Bath fan vents. Range hood exhausts. 4\" PVC pass-throughs. Any job where a 4\" duct has to fit through the hole you just cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cspan\u003eSmaller hole?\u003c\/span\u003e\u003cspan class=\"cf-arrow\"\u003e▼\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"cf-body\"\u003e\n\u003cp\u003eSee the \u003ca href=\"\/products\/crownforce-2-1-2-dry-core-drill-bit-for-concrete-brick-block-10-drilling-depth-sds-plus-sds-max-hex-adapters-pilot-bit-included\"\u003eCrownForce 2-1\/2\" dry core bit\u003c\/a\u003e for mini-split line sets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cp\u003e\u003cem\u003eCrownForce Industries. Factory-direct diamond tools. We own our factory, so every tool is built right and priced fair.\u003c\/em\u003e\u003c\/p\u003e","brand":"CrownForce","offers":[{"title":"Default Title","offer_id":44740561207389,"sku":"CF-WC-108","price":64.99,"currency_code":"USD","in_stock":false}],"url":"https:\/\/crownforcetools.com\/products\/crownforce-4-1-4-dry-core-drill-bit-for-concrete-brick-block-fits-4-duct-10-depth-sds-plus-sds-max-hex-adapters-pilot-bit-included","provider":"CrownForce Tools","version":"1.0","type":"link"}