Product Description
CMT 550-068X Multi-Purpose TCT Hole Saw is a 2-11/16" (68mm) carbide-tipped hole saw engineered for cutting through a wide range of building materials in a single tool. With 3 hardmetal (HW) teeth and right-hand rotation, this hole saw is purpose-built for demanding multi-material applications including wood, plywood, MDF, laminates, plasterboard, plastics, bricks, aerated concrete, and soft tiles. The hexagonal shank design ensures a secure, wobble-free fit in compatible arbors, making it a reliable choice for contractors, tradespeople, and serious DIYers who need precise, repeatable hole cutting across substrates.
Key Features
- 2-11/16" (68mm) cutting diameter - delivers a consistent, accurately sized hole for electrical boxes, plumbing pass-throughs, and structural penetrations without requiring secondary sizing steps.
- 60mm cutting depth - reaches through thick lumber, double-layer plasterboard, and stacked panel materials in a single pass, reducing repositioning and improving job site efficiency.
- 3-tooth hardmetal (HW) TCT construction - carbide-tipped teeth maintain sharpness across abrasive materials like bricks, aerated concrete, and soft tiles, providing longer service life compared to bi-metal alternatives when cutting masonry-type substrates.
- Hexagonal shank - resists slipping and cam-out in the arbor chuck, transmitting torque efficiently whether you are using a cordless drill, corded drill, or drill press.
- Right-hand rotation - optimized for standard drill operation, ensuring the teeth engage materials cleanly and chips clear away from the cut zone during use.
- Multi-material capability - a single hole saw that transitions between wood products, sheet goods, masonry-type materials, and plastics means fewer tool changes and a more streamlined kit.
Why This Product
- The 60mm cutting depth and 68mm diameter combination makes this hole saw well suited for trades work involving electrical rough-in, HVAC penetrations, and plumbing installations across a broad variety of wall and floor assemblies.
- Hardmetal (HW) carbide teeth are selected specifically for multi-purpose use - the same hole saw handles soft tiles, aerated concrete, and wood composites without requiring the user to swap to a specialty cutter for each substrate.
- The hexagonal shank provides a positive mechanical connection to compatible arbors, which reduces vibration and helps maintain hole accuracy - particularly important in brittle materials like plasterboard and soft tile.
- With only 3 teeth, each carbide tip carries a larger gullet for chip clearance, which keeps the cut running freely through deep cuts in materials like MDF and laminates where heat and debris buildup can otherwise stall progress.
Specifications
- Manufacturer Part Number: 550-068X
- Brand: CMT Orange Tools
- Diameter: 2-11/16" (68mm)
- Cutting Depth: 60mm
- Number of Teeth: 3
- Tooth Material: HW (Hardmetal / Carbide-Tipped)
- Shank: Hexagonal
- Rotation: Right-Hand (RH)
Approved Applications
- Hole cutting in wood and plywood
- Hole cutting in MDF and laminates
- Hole cutting in plasterboard
- Hole cutting in plastics
- Hole cutting in bricks and aerated concrete
- Hole cutting in soft tiles
Frequently Asked Questions
What is the cutting depth of the CMT 550-068X hole saw?
The cutting depth is 60mm, which allows the hole saw to pass through thick single-layer or stacked panel assemblies - including double plasterboard walls and structural lumber - without needing to reposition or flip the workpiece in many common installation scenarios.
What type of shank does this hole saw use, and which drills will it fit?
The CMT 550-068X uses a hexagonal shank, which is compatible with cordless drills, corded drills, and drill presses equipped with a matching hex-drive chuck or compatible arbor. The hexagonal profile prevents rotation slippage under load for more controlled cutting.
Can this hole saw cut through masonry-type materials like bricks or aerated concrete?
Yes. The 3 hardmetal (HW) carbide-tipped teeth are formulated to handle abrasive materials including bricks, aerated concrete, and soft tiles, in addition to wood products, plasterboard, and plastics. This multi-material capability makes it a versatile option for jobs where a variety of substrates must be drilled.
How many teeth does the CMT 550-068X have, and why does that matter?
This hole saw has 3 TCT (tungsten carbide-tipped) teeth. A lower tooth count creates larger gullets between each tooth, which improves chip and debris clearance during cutting. This is particularly beneficial in deep cuts through dense or composite materials where heat and clogging can reduce performance and shorten tool life.
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