The Diablo DHS17SPL 17-Piece Plumber's Bi-Metal Hole Saw Set is a multi-size hole saw kit built for plumbers, remodelers, electricians, maintenance crews, and serious DIY users who need clean, repeatable holes across a wide range of common jobsite materials. This is a hole saw set designed for drilling larger-diameter holes in wood, metal, plastic, siding, and other mixed materials. Model Number: DHS17SPL. If you are roughing in pipe, boring pass-throughs, opening access holes, or working across more than one material type in a day, this is the kind of set that saves time because the sizes you actually use are already in one case.

What makes this set useful on the job is not just the piece count. You get 11 hole saw cups ranging from 1-1/8 inches up to 4-1/2 inches, along with two mandrels, two pilot bits, and two adapter nuts. That gives you coverage for a lot of plumbing and mechanical work without building your own kit one size at a time. The 2-3/8 inch cutting depth is a big deal in real use because it lets you cut deeper holes in one pass, which can reduce rework when you are going through thicker stock or layered assemblies.

Diablo also built this set around speed on setup and cleanup. The one-size-fits-all mandrel works with Diablo hole saws from 5/8 inch to 6 inches in diameter, so you are not sorting through different arbor setups every time the hole size changes. Tool-free plug ejection is another feature that matters more than it sounds on paper. Anyone who has had to dig a stuck slug out of a hole saw with a screwdriver knows how much time that can eat up, especially when you are making repeated cuts.

The bi-metal construction and variable tooth design are aimed at mixed-material cutting and smoother performance. In practical terms, that means faster cuts with less vibration than a basic hole saw design, and better control when you move between wood, plastic, sheet metal, steel, siding, fiberglass, gypsum, plaster, and wood with embedded nails. That broad material range is what makes this a true multipurpose hole saw kit instead of a set that only works well in soft wood.

From a jobsite compatibility standpoint, the Diablo DHS17SPL 17-Piece Plumber's Bi-Metal Hole Saw Set is made to run in either a drill press or a hand held drill. It uses a hex shank and requires a minimum 3/8 inch chuck size. That makes it an easy fit for a lot of standard corded and cordless drills already in service. If you are already using Diablo hole saws, the shared mandrel system is a real advantage because it keeps accessory changes simple and cuts down on setup confusion.

Who should buy it? If your work regularly calls for larger holes for pipe runs, conduit, venting, access points, or mechanical penetrations, this set makes sense. It is especially well suited to plumbing work because the included diameter range lines up with the sizes that come up often in rough-in and finish work. It also makes sense for contractors who want one organized kit that can move from wood framing to sheet metal to plastic without switching to a different cutting system every time the material changes.

Diablo DHS17SPL 17-Piece Plumber's Bi-Metal Hole Saw Set for crews that need the right size now

This is the kind of hole saw kit that earns a permanent spot on the truck because it covers the sizes plumbers actually reach for and cuts down wasted time between holes.

• Who it's for: Plumbers, mechanical trades, remodelers, and contractors drilling repeated large-diameter holes in mixed materials.
• Why it stands out: The deep 2-3/8 in. cutting capacity, broad size range, one-size mandrel system, and tool-free plug ejection all help move the job along.
• Worth knowing: This set is built around versatility and convenience, so if you already run Diablo hole saws, the shared mandrel fit from 5/8 in. to 6 in. is a real plus.

• What kind of tool do I need to use this set? The set is designed for use with either a drill press or a hand held drill.
• What is the minimum chuck size required? You need a drill with at least a 3/8 in. chuck.
• What materials can this hole saw set cut? It is rated for aluminum, sheet metal, fiberglass, gypsum, PVC, plaster, steel, wood, and wood with nails.
• What size range does the set cover? The included hole saw cups range from 1-1/8 in. to 4-1/2 in.