Features
- Carbide-tipped for durability
- Two-piece design for easier diameter changes
- Replaceable center bit to extend tool life
- Available in various diameters and lengths; SDS Max and spline shank options
Specifications
| Product Diameter | 3-1/2 in |
| Overall Length | 4 in |
| Shank Type | SDS Max |
| Weight | 2.62 lb |
| Upc | 028874059047 |
| Country Of Origin | Germany |
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Carbide-tipped two-piece core bit with a replaceable center bit. Designed for drilling through-holes in concrete and masonry for pipes, ventilation, and other utilities. Offered in multiple diameters and lengths with SDS Max or spline shank options.
Project Ideas
Business
Mobile Dustless Coring Service
Offer on-site through-hole coring for homeowners and small contractors (mini-split linesets, dryer vents, sump pump discharges, hose bibs). Use a HEPA vac shroud for dust control, stock multiple diameters, and leverage the two-piece bit to swap sizes quickly. Flat-rate per hole plus material sleeves and sealing.
Weekend Core Kit Rentals
Bundle an SDS Max rotary hammer, two-piece core bits in common sizes, a replaceable center bit, water/dust attachment, and PPE into a rental kit. Target DIYers running conduit or vents through foundation walls. Upsell with masonry sleeves, escutcheons, foam sealant, and how-to guides.
Pre-Cored Garden Hardscape Line
Manufacture and sell concrete planters, benches, and fire pit blocks pre-cored for gas lines, irrigation, or lighting. The clean factory cores add value and reduce installer labor. Sell via landscape suppliers and garden centers; offer custom diameters on request.
Trade Partner Coring On-Call
Create a subscription/SLA for HVAC, plumbing, and electrical contractors who need fast holes on retrofit jobs. Guaranteed 24–48 hr response, tiered pricing by diameter/depth, and volume discounts. The replaceable center bit reduces consumable cost and turnaround.
EV Charger & Low-Voltage Retrofit Pass-Throughs
Specialize in clean, sealed penetrations for EV chargers, fiber/ethernet, camera cables, and solar conduit through masonry foundations. Provide exterior sleeves, firestop where required, and neat interior terminations. Partner with electricians and ISPs for lead sharing.
Creative
Perforated Breeze-Block Screen
Design a decorative privacy wall by coring precise patterns into standard concrete blocks or pavers. Use different core diameters to create a gradient of openings for light and airflow, then stack and mortar the blocks into a semi-transparent screen for patios or garden rooms.
Backlit Porthole Wall
Core clean circular openings in a masonry wall and insert frosted acrylic or glass tubes. Add LED strips or puck lights inside the cavities to create a row of glowing portholes for ambient outdoor lighting along pathways or terraces.
Planter Irrigation Manifold
Build oversized concrete planters, then core holes to route drip tubing or copper pipe through the walls and base. Integrate a hidden manifold so each planter has a neat inlet, overflow, and drain for automated watering and winterizing.
Outdoor Kitchen Utility Pass-Through
Core precise holes through a masonry countertop/backsplash and adjacent wall to route water, gas, and electrical conduits for a DIY grill station or sink. Use multiple diameters for supply, drain, and vent lines, finishing with escutcheons for a pro look.
Rain Chain Plinth
Cast a concrete pedestal and core a centered vertical channel to guide a rain chain or downspout extension. Add side cores near the base for drainage outlets and integrate decorative pebble or glass inlays in the top for a sculptural water feature.