Diablo Hole Saws with quick attach mandrel
David Frane Diablo Hole Saws with quick attach mandrel
Diablo Hole Saws with quick attach mandrel
David Frane Diablo Hole Saws with quick attach mandrel
Diablo Hole Saws with quick attach mandrel
David Frane Diablo Hole Saws with quick attach mandrel
Diablo Hole Saws with quick attach mandrel
Diablo Diablo Hole Saws with quick attach mandrel

Long known for its circular and linear blades, Diablo now makes hole saws with a feature set unlike those of competing models.

The most obvious difference has to do with length; Diablo’s hole saws are deeper than others. With a maximum cutting depth of 2 3/8 inches they are deep enough to go through a 2-by plus the subfloor or drywall under or over it. Not everyone needs this feature all of the time but when you need to go through something thick it’s a handy to be able to do so in a single pass.

Most systems require two mandrels, one for small hole saws and another for large ones. With Diablo it’s one-size-fits-all; the same mandrel can be used with all 32 hole saws, which go from 5/8” to 6” in diameter.

Less apparent than the length but equally important, is the mechanism for swapping out hole saws and pilot bits. Diablo’s system is entirely tool-less. The hole saws snap into place on the mandrel and can be removed by pulling back on a ring akin to the release on the chuck of an impact driver. Diablo refers to this quick-connect system as Snap-Lock. The pilot bit has a hex shank and snaps in place too. It’s a clever design that makes for easy changing of hole saws and pilot bits.

When a plug gets stuck you can pop out the pilot bit and use it to push the plug out—there’s no need to search for a screwdriver or some other tool.

These bimetal hole saws have a variable tooth design and are said to cut very quickly. I haven’t used one myself but saw one demonstrated at the STAFDA show; it went through 2-by material quickly—not as fast as a self-feeding bit but as fast as one could expect from a hole saw.

Diablo’s Snap-Lock hole saws are assembled in China from Swiss-made parts and will sell for between $8 and $41.