The Diablo DHS2500DG 2-1/2 in. Diamond Grit Hole Saw is a specialty accessory for anyone drilling larger openings in tile, stone, and glass. This is a diamond grit hole saw designed for drilling holes in brittle finish materials where a rough cut or chipped edge can ruin the job. Model Number: DHS2500DG. If you are installing plumbing trim, drain openings, shower hardware, or other pass-throughs in hard surfaces, this is the right kind of hole saw for that work.

The big advantage here is the diamond grit cutting edge. Instead of traditional teeth, you get an abrasive rim made for hard, brittle materials. That means longer life and faster material removal in porcelain tile, ceramic tile, granite, marble, slate, and glass. The continuous rim design also helps keep the cut smoother and reduces chipping compared to a rougher, tooth-style approach.

Diablo also built this hole saw to be practical in real use. The open slot design makes plug removal easier, which is a small detail until you are drilling several holes in a row and do not want to fight with stuck material. It is made for use with a hand-held drill, and it does not require a pilot bit. Starting the cut at an angle or with a jig helps the rim bite cleanly before you bring the tool upright.

For shops and installers already running Diablo's system, the compatibility piece matters. The DHS2500DG is designed to work with Diablo's Snap-Lock Plus mandrel system, so changing cups is quick and straightforward. If you are moving between hole sizes during a tile or stone install, that faster changeover saves time and keeps the job moving.

This 2-1/2 inch hole saw is a good fit for tile setters, plumbers, remodelers, bath installers, countertop installers, and serious DIY users who need clean openings in finished surfaces. It is not a general-purpose wood or metal cutter. It is a purpose-built tile, stone, and glass hole saw, and that is exactly why it earns its place in the kit when the material gets unforgiving.

Diablo DHS2500DG 2-1/2 in. Diamond Grit Hole Saw Gets the Job Done Without Beating Up the Finish

This is the kind of specialty hole saw you buy because the material is expensive, visible, and unforgiving, and a rough cut is not an option.

• Who it's for: Tile setters, plumbers, remodelers, and DIY users drilling larger openings in porcelain, ceramic, stone, or glass.
• Why it stands out: The diamond grit rim, continuous edge, and open slot design are all aimed at cleaner cuts and easier plug removal in hard finish materials.
• Worth knowing: This is an individual hole saw, not a full kit. You need the correct mandrel setup, and the no-pilot-bit starting technique takes a little practice if you have not used this style before.

• What materials can this hole saw cut? It is designed for porcelain tile, ceramic tile, granite, marble, slate, and glass.
• Does this hole saw use a pilot bit? No. Diablo specifies that no pilot bit is needed, and the cut should be started at about a 45-degree angle or with a jig.
• What drill do I need to run it? It is intended for use with a hand-held drill, and the minimum chuck size required is 3/8 in.
• Is it compatible with Diablo quick-change mandrels? Yes. It is compatible with Diablo's Snap-Lock Plus mandrel system for quick cup changes.