Diablo Snap Lock Plus: A Hole Saw System That Grows With You

Introduction

Most hole saw kits follow the same old formula: a handful of cutting bodies, multiple arbors for different size ranges, and plenty of small parts to lose. Diablo’s Snap Lock Plus system takes a different approach, combining an eight-piece carbide rough-in set with a diamond grit kit that shares the same single mandrel.

The pitch is simple: faster setup, easier blade changes, tool-free plug ejection, and the ability to move from wood to nails, shingles, fiber cement, tile, stone, and glass without swapping arbors. After looking closely at both kits, it is easy to see why this system appeals to contractors, tradespeople, and serious DIYers alike.

What Makes the Snap Lock Plus System Different

Traditional hole saw arbors come with additional moving parts, and older kits often require two separate arbors to cover the full range of rough-in sizes. That means switching back and forth between arbors when drilling supply and drain holes, which is a genuine time waster.

The Snap Lock Plus mandrel does away with that. Assembling it is as simple as popping the pilot point in, where it is retained securely, and swapping pilot points is just as quick: pop one out, pop the next in. The hole saw itself snaps into place and is locked without needing the traditional mounting holes in the back of the cutting body.

Diablo claims 40% deeper cuts than standard hole saws at 1-5/8 inches deep, along with 50 times longer life than a bi-metal hole saw. The carbide teeth cut clean wood, nail-embedded wood, roof shingles, and fiber cement for siding penetrations, which is a big deal for anyone roughing in a full project rather than just drilling clean lumber.

Diablo Snap Lock Plus Carbide Rough-In Hole Saw Set

The eight-piece rough-in set includes five hole saws in 2”, 2-9/16”, 3”, 3-5/8”, and 4-5/8” sizes, two additional pilot points, and one mandrel. That single-mandrel design is the headline feature, since it eliminates the multi-arbor juggling that comes with older kits.

The kit’s storage case has additional holes so you can rearrange the hole saws and add more bits over time, essentially building a go-box with exactly the sizes you need. Priced at roughly $200, it is positioned as a one-time, long-term investment that should pay for itself over years of rough-in work.

One thing worth noting: despite having relatively few teeth, these hole saws drill fairly clean holes suitable for rough-in work, which is exactly what the task demands.

Fast, Tool-Free Plug Ejection

Anyone who has used a hole saw knows the routine: the plug gets stuck inside the cutting body, and you back it out, twist it off, or pry it with a screwdriver. Diablo’s tool-free plug ejection changes that. You pull down, pop the mechanism, and the plug drops out.

It is dramatically faster than the traditional method, and while there may still be an occasional plug that needs a screwdriver, the vast majority eject cleanly in seconds. Multiply that across a day of drilling supply and drain penetrations and the time savings add up quickly.

One Mandrel for Every Material

Here is the feature that turns this from a good kit into a system. Previously, diamond grit hole saws often came with their own arbor, a different system, or different pilot points. With Snap Lock Plus, you pop out the pilot point from the mandrel, snap in a diamond grit hole saw, and go from roughing in wood to cutting steel, stone, glass, or tile with the same arbor.

No specialty mandrels, no second system to buy and maintain. One mandrel covers all of your hole-cutting needs, and once you are invested in the system, it makes sense to stay in it for future hole saw purchases.

The Diamond Grit Kit: Tile, Stone, and Glass

The Diablo Diamond Grit Hole Saw Kit is the companion piece that completes the system. In testing against porcelain, the hardest of the hard when it comes to tile, the results were impressive.

One practical tip surfaced along the way: keep water on the cut. Once the hole started cutting, the drilling area dried out and created a paste inside the hole, and a little extra lubricity keeps it cutting smoothly.

The finished hole in porcelain tile was remarkably clean, with a smooth edge that was not sharp. Because the diamond grit saws are part of the same mandrel system, you are not getting great hole saws for wood and something lesser for tile. The cut quality carries across the whole system.

Buying Advice

If your work involves rough-in drilling in wood, nail-embedded lumber, shingles, or fiber cement, the eight-piece carbide set is the foundation, and at around $200 it is a strong long-term investment. If you also drill tile, stone, glass, or metal, the diamond grit kit turns the same mandrel into an all-material system, which is where the real value of Snap Lock Plus shows up.

Conclusion

The Snap Lock Plus system is one of those rare tool upgrades that solves several small annoyances at once: multiple arbors, lost parts, slow plug removal, and material-specific mandrels. For contractors, tradespeople, and DIYers who drill a lot of holes, a single mandrel that handles wood, nails, shingles, fiber cement, and porcelain tile is a compelling reason to make the switch.