The Diablo D055050NMX 5-1/2 in. x 50-Tooth Circular Saw Blade for Aluminum is a small-diameter metal cutting circular saw blade built for cordless and corded trim saws. This is a circular saw blade designed for cutting aluminum and other non-ferrous materials. Model Number: D055050NMX. If you need cleaner cuts in medium aluminum without the mess and rough finish you get from abrasive wheels, this blade is the right kind of setup.

This 5-1/2 in. blade uses a 50-tooth triple chip grind pattern, which is a smart choice for aluminum cutting and other non-ferrous metal work. In plain terms, that tooth layout is meant to cut with control instead of tearing through the material. The benefit is cleaner edges, less burr, and less time spent cleaning up parts after the cut. Diablo also calls out that the blade is ideal for medium aluminum from 3/32 in. to 1/4 in. thick, which gives you a good real-world idea of where it belongs.

For cordless saw users, the thin kerf is one of the biggest reasons this blade makes sense. A thinner kerf means the saw removes less material on each pass, so the cut takes less effort. That helps the saw stay smoother through the cut and puts less load on the motor and battery. If you are using a compact trim saw for aluminum flat stock, channel, or similar profiles, that lower cutting resistance matters a lot more than it does on a big corded shop saw.

Diablo backs the cutting edge with TiCo Hi-Density Carbide and a tri-metal shock-resistant brazing system. What that means on the job is better tooth durability when the blade sees impact and heat that would shorten the life of cheaper blades. The brand also uses laser-cut stabilizer vents and a laser-cut arbor design to reduce vibration and help the blade track more accurately. That matters because metal cutting gets sloppy fast when a blade starts wandering or deflecting.

Another practical advantage is fitment. The blade comes with three bushings and fits 20 mm arbor saws out of the package while also adapting to 1/2 in., 5/8 in., and 10 mm arbor sizes. That gives this aluminum cutting circular saw blade a lot more flexibility than a one-size arbor blade. The listed compatibility includes common setups from DeWalt, Makita, Black and Decker, Ryobi, Porter Cable, and Craftsman, so it covers a broad range of small saw platforms used for trim, punch list work, and light fabrication.

In use, this blade is aimed at anyone who wants a cleaner, more controlled cut in non-ferrous material than a grinding wheel can deliver. Diablo specifically positions it for aluminum, copper, brass, plastics, and fiberglass. It is a good fit for contractors who install aluminum trim, fabricators making light cuts in non-ferrous stock, remodelers who need a compact saw solution, and serious DIY users who want a proper metal cutting blade instead of forcing a wood blade into a job it was never made to do.

The numbers also back up that purpose-built design. You are getting a .061 in. kerf, a .039 in. plate thickness, a 20 mm arbor, and a maximum speed rating of 14,500 RPM. Those are the details that tell you this blade is not just a general-purpose small blade with different paint on it. It is built specifically to run fast, stay stable, and cut non-ferrous material with better finish quality and less fuss.

Diablo D055050NMX 5-1/2 in. x 50-Tooth Circular Saw Blade for Aluminum Gets Specific in a Good Way

This is the kind of specialty blade that makes a small saw way more useful when the job calls for clean non-ferrous cutting instead of rough hack-and-fix work.

• Who it's for: Contractors, fabricators, remodelers, and serious DIY users running compact trim saws for aluminum, brass, copper, plastics, or fiberglass.
• Why it stands out: The thin kerf, triple chip grind tooth pattern, and multi-arbor fitment make it genuinely practical for cordless saw users who need clean cuts and broad compatibility.
• Worth knowing: This is a purpose-built metal cutting circular saw blade, not a general wood blade. It shines in non-ferrous material, especially medium aluminum, and it is a better choice when finish quality matters.

• What materials is this blade designed to cut? It is designed for aluminum and other non-ferrous materials, including copper, brass, plastics, and fiberglass.
• Will this blade fit more than one arbor size? Yes. It uses a 20 mm arbor and includes bushings for 1/2 in., 5/8 in., and 10 mm arbor saws.
• What thickness of aluminum is it intended for? Diablo lists it as ideal for medium aluminum from 3/32 in. to 1/4 in. thick.
• What type of saw is it best suited for? It is ideal for cordless arbor trim saws and other compatible small circular saw platforms that accept a 5-1/2 in. blade.