$9.99
We are a professional hole saw verified supplier offering a wide range of specialized drilling tools for metal, wood, and stone at affordable prices.
The 20mm Bi-Metal Hole Saw with 1/4″ Hex Shank is built for precision, durability, and versatility. Its bi-metal design combines sharp high-speed steel teeth with a flexible steel body, delivering a longer lifespan and cleaner, faster cuts. From thin metal and wood to plastic, pipe, and plaster, this hole saw handles a wide range of materials with ease. It’s also a reliable choice for drywall and plasterboard installations, especially when creating openings for retrofit LED recessed lights, can lighting, or downlights in your living room, bedroom, or hallway. Designed for everyday professionals and home project enthusiasts alike, this hole saw makes drilling smoother, faster, and more precise.
1/4″ hex shank – universally compatible with drills and 1/4″ hex impact drivers.
For your convenience, this hole saw is compatible with a variety of common tools, including:
Outside Diameter: 20mm
Material: High speed steel
Shank: 1/4″ hex shank
To prevent tooth chipping, maintain a steady cutting motion and avoid sudden, forceful impacts between the cutting edge and the material.
When cutting thicker materials, applying water or coolant during operation is recommended to keep the tool cool and extend its life.
The performance and durability of a hole saw depend on the quality of its three core parts:
Each component plays a critical role. If any one of them fails, the overall cutting efficiency and reliability of the tool suffer. Many users have experienced broken drill bits during use—often a sign of inferior material or poor design.
Even the best drill bits can break if misused, but ours are crafted from premium high-speed steel (HSS) to greatly reduce that risk. The material provides excellent hardness and toughness, giving you confidence in high-torque drilling tasks while maintaining long service life.
Additionally, some customers may experience difficulty drilling holes in steel components (as shown in the image), resulting in rapid tool wear and an inability to bore through the steel.
There are two main reasons for this:
1. The material of the tooth tip differs, specifically whether or not it contains 8% cobalt. All raw materials for our tooth tips are inspected before being stocked.
2. The steel may be harder or thicker. In such cases, we strongly recommend using the TCT hole-cutting tool shown below for drilling.
The 8% cobalt-tipped teeth are designed for superior penetration across a wide range of materials, including wood, plastic, synthetic resin, aluminum, cast iron, and steel. A reinforced base cylinder, paired with a strong central shaft connection, adds outstanding stability during demanding hole-cutting operations.
Our hole saw cylinders are produced on advanced rounding machines, resulting in high concentricity and balance. This precision engineering minimizes vibration, ensures smoother cutting action, and leaves behind cleaner, perfectly round holes—a major advantage when working on professional projects.
| Size |
20mm |
|---|---|
| Shank |
1/4″ Hex |
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