The DEWALT DT2974-QZ Alligator Saw Blade is a purpose-built replacement blade designed for Demolition and Alligator saws to cut through dense masonry materials like Poroton Class 12 blocks with authority and speed. It’s not your garden-variety blade — this one’s engineered to go after big, brittle stuff that chews up weaker blades.

Put this 16.9" (430 mm) saw blade on the right tool — like a DW396 / DW397 series Alligator saw — and it’ll make quick work of hollow clay blocks, hollow bricks and aerated blockwork that you’d normally dread cutting on site. Yeah, it’s a bit of kit for masons and demolition pros.

Key Features:

• Precision Carbide Teeth - Bite through Poroton class 12 block material fast without chattering or binding.
• Optimized for Alligator Saws - Works with the DWE396/397/398/399 series so you get repeatable results every cut.
• 430 mm Working Length - Gives enough cut capacity for most standard block widths you’ll see on site.
• HSS & TCT Construction - Combined HSS backing with tungsten carbide tips stays sharp longer under heavy use.
• Single-Piece Design - Keeps the blade stiff and stable so you’re not fighting twist or flex mid-cut.

Applications

If you’re busting up walls, cutting out door openings or trimming blockwork, this Poroton Class 12 saw blade is built specifically for that sort of abuse — hollow block, thermobrick, Porotherm, aerated masonry, you name it. It’s not meant for wood or metal — this one’s for masonry and heavy building blocks.

Why Choose This Model

The bottom line is simple: when you’ve got a job that’s all about making square, clean cuts in brittle blockwork day after day, the DT2974-QZ blade doesn’t quit on you. You feel the difference — the cut stays straighter, teeth stay sharper longer, and you’re not swapping blades every few cuts like with generic aftermarket ones. This is a trade-grade blade through and through.

Technical Specifications Explained

• Blade Length — 430 mm - That’s your true cutting reach on block — enough to span most standard wall widths without staging cuts.
• Material Type — HSS with Carbide Tips - Combines a tough back bone with carbide cutting surfaces that shrug off wear on hard, abrasive masonry.
• Compatibility — DWE396/397/398/399 - Made to fit those popular Dewalt Alligator saw platforms so you’re not guessing if it’ll work.
• Application — Poroton Class 12 - Tailored for this density of clay block — doesn’t fight you if you stick to what it’s rated for.
• Teeth Count — ~48 TCT - Gives a balance of cut speed and finish without tearing up the material too aggressively.

Who Should Buy This

If you’re a mason, builder or demolition pro regularly sizing and trimming hollow clay blocks and thermobrick on jobsites, the DEWALT DT2974-QZ saw blade is a solid fit for your Alligator saw arsenal — and it’ll save you hours compared to generic blades.

But if your work’s mostly wood or metal cutting, or you only need a blade every now and then for light jobs, this heavy-duty masonry-focused blade isn’t where your money best goes — get a multipurpose alternative instead.