Features
- Carbide tip for extended wear resistance
- U-shaped flute for debris removal
- Two-cutter design for rotary hammer use
- Spline shank for compatible rotary hammers
- Hardened core to reduce breakage
- Open-head design to channel dust into flutes
Specifications
| Applicable Materials | Concrete and masonry |
| Drill Bit Size | 3/8 in |
| Cutting Depth | 5 in |
| Overall Length | 10 in |
| Working Length | 5 in |
| Number Of Flutes | 2 |
| Flute Type | U-shaped |
| Cutting Edge Material | Carbide |
| Point Type | Rock carbide |
| Shank Type | Spline |
| Shank Size | 3/4 in |
| Cutting Direction | Right hand |
| Finish | Bright |
| Material | Steel |
| Type | 2-cutter |
Related Tools
Related Articles
A two-cutter spline-shank drill bit for rotary hammers, intended for drilling concrete and masonry. It has a carbide tip for wear resistance, a U-shaped flute to remove debris, a hardened core to reduce breakage, and an open-head geometry that helps channel dust into the flutes.
Project Ideas
Business
Masonry anchor & fixture installs
Offer a fast micro-service mounting shelves, TV brackets, handrails, hose reels, bike racks, and signs to concrete and brick. Standardize on 3/8 in sleeve/wedge anchors and price per hole. The spline-shank bit with carbide tip gives quick, clean holes and high throughput.
Dustless drilling subcontractor
Provide HEPA-vac-assisted, low-dust drilling in occupied homes and retail spaces for electricians, cabinet installers, and sign shops. The bit’s open-head design channels dust into the flutes; paired with a shroud and vacuum, it helps meet silica control requirements and keeps jobs mess-free.
Hardscape wiring pass-throughs
Specialize in drilling neat 3/8 in penetrations through pavers, block, and concrete for landscape lighting, speakers, and irrigation sensor lines. Bundle grommets, UV cable, and sealant into a turnkey per-hole package for landscapers and low-voltage contractors.
Stone decor product line
Produce and sell stone rain chains, garden screens, and minimalist stone-and-rod candle bases made by drilling 3/8 in holes in natural stone. Sell on Etsy and at markets; offer custom lengths and finishes. The durable carbide bit keeps production consistent across batches.
Post base/pergola anchoring
Install pergola, trellis, and privacy screen post bases on existing slabs and block walls using 3/8 in wedge anchors. Offer layout, drilling, anchoring, and epoxy sealing as a flat-fee service. The 5 in cutting depth handles most base anchor specs on patios and driveways.
Creative
River-stone rain chain
Drill 3/8 in holes through flat river stones and thread them on copper rod or heavy wire to make a sculptural rain chain. The carbide tip eats through natural stone, while the U-shaped flute and open-head geometry clear slurry. Use light water to keep dust down and make smooth, chip-free holes.
Brick-mounted herb shelves
Make a rustic herb shelf wall on brick or block. Lay out brackets, then drill 3/8 in x ~2–3 in deep holes with the rotary hammer and spline bit for sleeve or wedge anchors. The bit’s 5 in working length gives wiggle room near mortar joints and its open-head design channels dust into the flutes for cleaner drilling.
Hidden-wire garden lighting
Route low-voltage lighting cable invisibly through pavers or retaining wall caps by drilling 3/8 in pass-throughs. The 10 in overall length lets you reach awkward spots, and the carbide rock point stays sharp for multiple holes. Add rubber grommets and sealant for a pro finish.
Stone bead privacy screen
Drill 3/8 in holes through beach stones to create strands that hang as a breezy privacy screen or mobile. Suspend on a steel frame anchored to masonry with 3/8 in wedge anchors. The bit’s hardened core resists breakage when stones vary in density.
Garage hangboard/pull-up mount
Install a climbing hangboard or pull-up bar on solid concrete or fully grouted block. Drill 3/8 in anchor holes with the spline bit; the two-cutter design is ideal for rotary hammer drilling in tough aggregate. Use rated anchors and verify the substrate is solid for safety.