255 mm Hole Saw, TUNEZ® M42 Bi-Metal Hole Cutter Set with Hexagon Arbor and Centring Metal Drill Bits Holesaw Kit for Wood Metal Plasterboard Iron Sheet Pipe Plastic 255 MM, 10-1/32"
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“A capable mid-range hole saw kit suited for home workshops and renovation work, offering better material versatility than budget alternatives without premium pricing.”
Our Review
The TUNEZ 255mm M42 bi-metal hole saw delivers solid performance for mixed-material applications. The M42 high-speed steel teeth maintain edge retention through wood, metal, and plasterboard without excessive dulling—a meaningful advantage over standard HSS alternatives. The hexagon arbor grip is secure and reduces wobble under load, though chuck runout can develop with repeated use on older drill presses. At 255mm depth capacity, it handles structural work efficiently, but carbide-tipped competitors cut faster in cast iron. The centring bit prevents wandering on pilot holes, essential for precision. Build quality feels respectable for the price point, though the arbor could be slightly heavier-duty for sustained industrial use.
What We Like
- M42 bi-metal construction maintains sharpness longer than standard HSS in mixed materials
- Hexagon arbor design minimizes slippage and chuck runout on secure handheld drills
- Complete kit with centring drill bit eliminates separate purchases for common tasks
Watch Out For
- Arbor durability concerns with heavy-duty or prolonged industrial use
- Feed rate requires operator experience to avoid binding in harder metals like cast iron
The Verdict
“A capable mid-range hole saw kit suited for home workshops and renovation work, offering better material versatility than budget alternatives without premium pricing.”
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