The AMTECH Bi-Metal Holesaw 76mm is a heavy-duty tool made to perform efficiently. The TN-7317 is perfect for door knob installation, pipework, ventilation ducts, electrical fittings and general construction projects with a 76mm (3-inch) cutting diameter. It is made from high-quality materials and is an M42/M35 cobalt-embedded HSS teeth compound in a robust alloy body to provide hardness along with flexibility for ruthless works. The bi-metal construction consisting of high-speed steel and carbon makes for consistent cutting regardless of the materials used (wood, sheet metal, plastics or composites). Variable pitch teeth reduce vibration for faster drilling, less wear and tear on the operator, and cleaner hole finish that requires no post-cut filing. Built for professional tradespeople and perfect choice for DIY enthusiasts, this durable holesaw will work with virtually all standard arbors, corded drills and cordless drills – in other words excellent tools for electricians, plumbers, joiners and construction workers. Its deep cut design enables easier, deeper cutting into thick materials for consistent use at the residential, commercial and industrial level.
What's Included
Key Benefits
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3 inch Cutting Diameter – Ideal for door hardware, pipework, and ventilation installs.
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Bi-Metal Construction — Includes high-speed steel teeth attached to an alloy body.
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Multi-Material Cutting – Woods, sheet metal, plastics and composites.
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Tidy Results: Variable pitch teeth minimize vibration and develop smoother finishes.
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Deep Cut Design – Used first to cut thicker workpieces.
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Compatibility: use with standard arbors and most 3/8" drills
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For the Professional & DIY – Used by electricians, plumbers, joiners and home users
Application Tips
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Slower speeds for metals to keep the teeth sharp.
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Use a cutting fluid or lubricant when drilling metal
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Make sure to secure your workpiece well at the time of drilling for better control.
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Let the saw work at its natural speed, never push it too hard.
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Use wearing proper protective goggles and gloves always.
Product Information
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Type: Bi-Metal Holesaw
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Brand: AMTECH
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Size: 76 mm in diameter
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Material: steel blade and alloy body
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Compatible with: corded drills, cordless drills, arbor
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Design: variable pitch teeth
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Use: professional trades & diy projects
FAQs
1. What size hole does this saw cut?
With a 76mm (3-inch) hole punch.
2. Can I use it for installing door knobs?
Yes, it is small and great for door hardware installations.
3. Can I use Cordless Drills?
True it operates on corded drills and even cordless ones.
4. Is there an arbor?
The arbor is not included, so that must be bought separately.
5. Not Applied for Sheet Metal Cutting?
Well, the HSS teeth are designed to cut sheet metal and all other metals.
6. What Other Stuff Can It Cut?
A little goes a long way, and it works on wood, plastics, or composite panels.
7. Is this holesaw heavy-duty?
Of course it is for pro use cases.
8. What can be done to improve the life of the blade?
Use the drill at a low speed while drilling on metal. Also, use lubricant.
9. Does it produce neat edges?
Actually, the variable pitch teeth ensure vibration-free and accurate cuts.
10. Who can use this tool?
Both DIY enthusiasts as well as professional workers such as electricians, plumbers, carpenters etc.
