2-1/2" (65mm) Diamond Core Drill Bit for Mini Split Line Set Holes in Concrete, Brick & Block, Dry Cut, 10" Depth, SDS-Plus & Tri-Flat Adapters - CrownForce
2-1/2" (65mm) Diamond Core Drill Bit for Mini Split Line Set Holes in Concrete, Brick & Block, Dry Cut, 10" Depth, SDS-Plus & Tri-Flat Adapters - CrownForce
Couldn't load pickup availability
Drill clean 2-1/2" holes through masonry walls. No water. No hammer mode. No guesswork.
The CrownForce CF-WC-65 dry core bit is built for one job: punching mini-split line-set holes and pipe pass-throughs straight through concrete, brick, and block. With 10 inches of working depth, it gets through 8" block and most solid masonry walls in one pass.
Fits the drill you already own▼
Two adapters included, both with a 5/8"-11 thread:
- SDS-Plus adapter. Fits your rotary hammer. Use drill mode only, hammer OFF.
- Tri-flat shank adapter. Fits any standard 1/2" drill chuck. Use a drill with a side handle.
No center bit. Drill a 1/4" pilot hole all the way through first to mark the exit point, then core halfway from each side for clean edges on both faces.
Built for real jobs▼
- Diamond segments. Made for dry cutting through concrete, brick, and block.
- Dry cutting. No water hookup needed, so you can drill from a ladder or indoors. Indoors, keep a shop vac at the hole to catch the dust.
- Rotation-only. Runs on any rotary hammer with a rotation-only (drill) mode. Do not use hammer mode.
Specs▼
| SKU | CF-WC-65 |
| Diameter | 2-1/2" (65mm) |
| Working depth | 10" (250mm+) |
| Thread | 5/8"-11 (standard US) |
| Adapters included | SDS-Plus, tri-flat shank |
| Use | Dry, rotation only |
| Materials | Concrete, brick, cinder block, masonry |
Common jobs for this bit▼
Mini-split AC line-set holes. PVC and conduit pass-throughs: 2" PVC (2.375" outside) fits. Plumbing penetrations. If you need a clean 2-1/2" hole through a masonry wall, this is the bit.
Fits 9k–12k BTU mini-split line sets. Larger and multi-zone systems often call for a 3" or bigger hole. Check the wall sleeve size in your unit's install manual before you drill.
Brick over wood studs? Core the masonry, then switch to a hole saw for the wood. Not for rebar or heavily reinforced concrete.
Bigger hole?▼
See the CrownForce 4-1/4" dry core bit for dryer vents and 4" duct.
CrownForce Industries. Factory-direct diamond tools. We own our factory, so every tool is built right and priced fair.
