Features
- IRON BLAST process to increase bit strength and resistance to fatigue
- Full carbide 4-cutter head for increased service life
- Rock carbide tip to maximize carbide contact
- Head geometry designed to resist rebar strikes
- Hardened core to reduce breakage
- U-flute / four-flute design to expedite debris removal
- Open head design to channel dust into the flutes
- Wear mark indicator for hole-diameter management
- Manufacturer no-break replacement guarantee while wear mark is visible (excludes: DW5861, DW5830, DW5831)
Specifications
| Diameter | 7/8" |
| Overall Length | 21-1/2" |
| Usable/Working Length | 16" |
| Number Of Flutes | 4 |
| Shank Type | SDS Max |
| Tip Material | Rock carbide |
| Bit Material | Carbide-tipped |
| Pieces Per Unit | 1 |
| Pack Quantity | 1 |
| Weight | 1.95 lb |
| Cordless | No |
| Upc | 028874058163 |
| Country Of Manufacture | Germany |
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SDS Max rotary hammer drill bit with a 4-cutter carbide head and a 16" usable length. The bit uses a surface-strengthening process (IRON BLAST) and a hardened core intended to reduce fatigue and breakage. The head geometry and carbide tip are designed to resist rebar contact and improve service life. A wear mark indicates remaining usable diameter. Made in Germany. The manufacturer offers a replacement guarantee while the wear mark is still visible (see exclusions).
Project Ideas
Business
Epoxy Anchor & Doweling Service
Offer post-installed anchoring for pergolas, handrails, shade sails, machinery bases, and ledger retrofits. Drill 7/8" holes for 3/4" threaded rod/rebar with structural adhesive. The SDS Max bit’s 16" depth and rebar-resistant head minimize delays and bit damage on reinforcement strikes.
Small-Diameter Penetration Drilling
Provide a mobile alternative to core drilling for electricians/plumbers: fast, clean 7/8" penetrations for 1/2" conduit or sleeves through masonry and concrete. Upsell dust collection and patching/caulking for a turnkey service.
Retaining-Wall Drainage Retrofits
Specialize in drilling 7/8" weep holes and installing sleeves or vents to fix saturated walls and landscaping failures. Package includes assessment, drilling, weep hardware, and cleanup; partner with landscapers for referrals.
On-Site Boulder Fountain Pop-Ups
Set up at nurseries or markets to transform customer-selected stones into drilled fountains on the spot. The 16" usable length allows centered, deep bores; sell pumps, basins, and installation as add-ons.
Handrail & Safety Upgrade Installs
Market to property managers for rapid install of code-compliant railings and guards on concrete/masonry. Drill 7/8" holes for 3/4" anchor systems, even in reinforced slabs, and include adhesive anchoring where needed for high-load applications.
Creative
Boulder Bubbler Fountain
Use the 7/8" x 21-1/2" SDS Max bit to drill a clean, deep channel through a granite or basalt boulder for a hidden water line. The 16" usable length lets you center the hole for a vertical water plume, and a 7/8" bore fits 1/2" PVC (0.84" OD) with room for epoxy. The 4-cutter carbide head handles tough aggregate without walking.
Copper-in-Stone Trellis
Drill 7/8" sockets into concrete steps, planters, or stone caps to accept 3/4" copper pipe (0.875" OD) as snug, epoxy-set uprights. Build sculptural trellises or minimalist handrails by bending and joining copper, creating a sleek metal-in-masonry look.
Shade Sail Anchor Retrofits
Add backyard shade by drilling 7/8" holes in reinforced block or concrete to install 3/4" threaded rod with structural epoxy for heavy-duty shade sail eye plates. The bit’s rebar-resistant head reduces snags on embedded steel during retrofits.
Retaining Wall Weep + Lighting Pass-Throughs
Drill 7/8" weep holes to relieve hydrostatic pressure, then add snap-in grilles or short sleeves. Pair with low-voltage pathway lighting by running small conduit through additional penetrations to keep wires hidden and safe.
Salvaged Concrete Bench
Turn precast slabs or pavers into a street-style bench by drilling 7/8" through-holes for 3/4" stainless threaded rod. Through-bolt timber or composite seating to the slab for an industrial, long-lasting bench.