Features
- Recessed grooves milled into the bit body for more accurate drilling
- Diamond-embedded segments laser welded for reinforced concrete
- Turbo and crown segment designs (on select sizes) for extended life and faster cutting
- Proprietary depth control indicators
- Hex shank/connection
- Uses manufactured diamonds (engineered for drilling)
Specifications
| Application Material | Reinforced Concrete |
| Masonry Drilling Type | Core Cutter |
| Diameter (In) | 3" |
| Diameter (Mm) | 76.2 |
| Depth Of Cut | 14" |
| Product Height (In) | 14" |
| Product Height (Mm) | 356 |
| Product Length (In) | 31" |
| Product Length (Mm) | 397 |
| Number Of Pieces | 1 |
| Product Pack Quantity | 1 |
| Packaging | Box |
| Shank / Connection | Hex |
| Power Tool Compatibility | 5/8-11 thread for some smaller diameters; 1-1/4-7 thread for 1" diameter and larger (adapter may be required for certain thread patterns) |
| Opt Sku | DW-DW55016 |
| Mpn | DW55016 |
| Upc/Gtin | 885911947657 |
| Product Type | Diamond Core Bits |
| Shipping Weight (Lb) | 25.00 |
| Has Perform & Protect? | No |
| Is Pgm Certified? | No |
| Warranty | No limited warranty for this specific product (per listing) |
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3" diamond core bit for drilling reinforced concrete and masonry. The bit has laser-welded, diamond-embedded segments with turbo/crown segment styles (on select sizes) and depth control indicators. It uses a hex shank and is packaged as a single core bit in a box. Thread/adaptor compatibility is provided for common core drilling thread patterns.
Project Ideas
Business
Retrofit Utility Penetrations
Offer a mobile coring service for plumbers, electricians, and HVAC installers to create 3 in penetrations through reinforced concrete and masonry for sleeves, vents, and conduit. The diamond core bit’s ability to cut rebar and maintain straight bores reduces change orders and keeps trades on schedule.
Hardscape Lighting Retrofits
Specialize in installing recessed well lights and pathway fixtures in existing concrete patios, driveways, and block walls. Use the 3 in core to set housings cleanly without overcutting, upsell sealed grommets and drain bases, and bill per hole plus fixture install.
Concrete Core Sampling Service
Provide on-call 3 in core extraction for engineers, GC QA/QC, and moisture/ASR testing labs. Deliver labeled, intact cores with documented depth via the bit’s indicators, and offer patch-back services. Package as rapid-response sampling with a per-core fee and travel rate.
EV/Heat Pump Penetration Partner
Partner with EV charger and heat pump installers to create clean wall penetrations for line sets and conduits in block and poured walls. Standardize a menu of 3 in holes with sleeves, firestop, and exterior escutcheons; schedule same-day coring so installers don’t need to own core rigs.
Value-Added Hardscape Upgrades
Sell retrofit add-ons to homeowners: umbrella sleeves, drink holders, drainage scuppers, and grill gas pass-throughs in existing concrete. The 3 in diamond core bit creates professional, chip-free holes that you finish with stainless or polymer inserts; bundle packages by patio size.
Creative
Glow-Core Path Lanterns
Core clean 3 in wells into existing concrete pavers or precast blocks and seat frosted acrylic tubes with low-voltage LEDs inside. Use the depth control indicators to stop short and leave a shoulder for the lens to rest on, and the turbo/crown segments for crisp edges in masonry. Cap with a perforated stainless top for a sleek, vandal-resistant pathway light.
Bubbler Boulder Water Feature
Turn a natural stone or cast-concrete bollard into a bubbling fountain by coring a 3 in vertical service cavity for pump access and lighting, plus a smaller through-hole for the water line. The diamond-embedded segments handle hard aggregate; the recessed grooves help keep the bit tracking straight for a plumb cavity.
Outdoor Countertop Bottle Chillers
Core 3 in holes into a concrete or masonry outdoor kitchen top to drop in stainless sleeves that hold chilled bottles or ice. The depth indicators provide consistent seat depth across multiple holes, and the clean wall finish from the crown segments makes sleeves fit snug without wobble.
Retaining Wall Plant Pockets
Create cylindrical planting pockets in concrete block or poured retaining walls for succulents and herbs. Core partial-depth 3 in sockets, line with breathable geotextile, and fill with lightweight soil. The bit’s accurate tracking helps you align multiple pockets into a pattern without drift.
Clean Cable Pass-Throughs
Add tidy 3 in pass-throughs for outdoor TVs, speakers, or pergola lighting in masonry walls and columns. Use the bit’s depth control to avoid blow-through and finish with flush grommets or stainless escutcheons for a professional look that hides conduit and protects edges.