The Diablo DOS3125RCGP 3-1/8 in. AMPED Demo Demon Starlock Carbide Teeth Oscillating Blade for General Purpose Cuts is a carbide oscillating blade built for fast, controlled cutting in mixed jobsite materials. This is an oscillating blade designed for general purpose plunge cutting in clean wood, nail-embedded wood, metal, PVC, and plastics. Model Number: DOS3125RCGP. If you need one blade that can stay on the tool while you move between demo work, cut-ins, and repair work, this is the kind of accessory that makes sense.

The big selling point here is durability. Diablo rates the carbide teeth for up to 50 times longer life versus standard bi-metal blades, which matters when you are hitting more than just clean wood. If your cuts regularly involve hidden nails, mixed materials, or abrasive plastics, a standard blade can burn up quickly. Carbide holds up better, so you spend less time swapping blades and less time forcing a dull accessory through the cut.

This blade uses a curve contact edge, which is a practical feature, not just packaging copy. On plunge cuts, that curved front edge helps the blade start more smoothly and stay more stable as it enters the material. The benefit is less chatter, better control, and a cleaner cut line, especially when you are trimming out openings, undercutting, or making repair cuts in finished spaces where wandering matters.

At 3-1/8 inches wide with up to 1-3/16 inches of cutting depth, it gives you a useful balance of coverage and control. The wider blade profile helps when you want a broader, straighter plunge cut, while the cutting depth is enough for a lot of common remodeling and service work. That makes it a solid fit for flooring transitions, jamb work, trim modifications, pipe and plastic cut-ins, and general demo where materials are unpredictable.

Diablo also adds its Black I.C.E. coating to help protect the cutting edge against wear. In practical terms, that coating is there to keep the teeth running cleaner and lasting longer under heat and friction. Combined with the carbide teeth, it is aimed at the kind of work that beats up ordinary blades fast.

On the tool side, this blade is made for maximum performance in cordless and corded Starlock tools, including Fein Starlock platforms. It is also listed as compatible with non-Starlock multi-tools from AEG, Bosch, Festool, Makita, Metabo, Milwaukee, Ridgid, Rockwell, and more. Diablo specifically notes that it is not compatible with Craftsman, DeWalt, Dremel, Hart, or Porter-Cable, so that is worth checking before you buy.

This is a smart buy for remodelers, service techs, carpenters, flooring installers, and serious DIY users who want one oscillating multi-tool blade that can handle more than clean lumber. It is especially useful if your work moves between wood, fasteners, metal, and plastics in the same day. If you mainly cut only clean wood, a less expensive blade may do the job. If your cuts are rougher and more varied, the carbide edge and longer life are the reason to step up to this one.

Why the Diablo DOS3125RCGP earns a spot in the bag

This is the kind of oscillating blade you buy when you are tired of chewing through standard blades every time the cut gets ugly.

• Who it's for: Remodelers, carpenters, service techs, and DIY users cutting mixed materials with an oscillating multi-tool.
• Why it stands out: The carbide teeth, curve contact edge, and Starlock-focused design make it a strong choice for controlled plunge cuts in wood, fasteners, metal, PVC, and plastics.
• Worth knowing: It is a single premium blade, not a multipack, and compatibility is broad but not universal, so check your tool brand before you order.

• What type of tool does this blade fit? It is made for Starlock oscillating multi-tools and is also compatible with many non-Starlock multi-tools from brands including AEG, Bosch, Festool, Makita, Metabo, Milwaukee, Ridgid, and Rockwell.
• What materials can it cut? This blade is designed for clean wood, nail-embedded wood, metal, PVC, and plastics.
• What is the cutting depth? The listed maximum cutting depth is up to 1-3/16 inches.
• Is it compatible with DeWalt or Dremel oscillating tools? No. Diablo lists this blade as not compatible with Craftsman, DeWalt, Dremel, Hart, or Porter-Cable tools.