Bionso 40 PCS Oscillating Saw Blades, Premium Multitool Kit for Wood Metal Plastics, Tool Blades Fit Dewalt Worx Rockwell Wen Milwaukee Makita Ryobi Bosch Fein Porter Genesis Black

Why I reached for this kit

An oscillating multi-tool is one of those “save the day” tools in my kit: undercutting door jambs, flush-cutting shims, notching trim, making outlet cutouts in drywall, and nipping off the odd nail buried in wood. Those jobs burn through blades quickly, so I’m always on the lookout for a bulk pack that balances price and performance. The Bionso kit caught my eye because it promises a full spread of 40 blades, multiple materials (high-carbon steel, bi-metal, and titanium bi-metal), and broad compatibility. I spent several weeks working through a variety of house projects to see where it shines and where I’d still reach for premium specialty blades.

What’s in the box and what it fits

The kit includes 40 blades across roughly ten patterns: a mix of narrow and standard-width plunge-cut blades for wood, a few precision-tooth profiles for cleaner cuts, several bi-metal and titanium bi-metal blades for nails and thin metals, and a couple of semicircular blades that excel at long, shallow cuts in drywall or laminates. The finish is the familiar black coating found on many budget-friendly blades.

Compatibility was solid. The universal slotted interface seated cleanly with my DeWalt and Milwaukee quick-release heads and mounted fine on a Makita clamp-style tool. If you’re using a Starlock-only tool (certain Fein/Bosch models), plan on an adapter; the blades aren’t true Starlock. On traditional OIS-style interfaces they’re a drop-in. Once locked down, I didn’t notice slop or chatter beyond what’s typical for this category.

Cutting wood and plastics

Wood is where this set earns its keep. On pine casing and poplar face frames, the wood blades plunged predictably with minimal wandering. The finer-tooth profiles left a clean shoulder when I undercut door jambs over tile; I also liked the narrower blades for getting into tight corners and making surgical notches in cabinet backs. In hardwood (oak stair nosing and maple flooring), the cut rate slowed—as expected—but remained controllable, and I didn’t see the kind of tooth rounding that cheaper blades sometimes show after just a few inches.

For finish-sensitive work, the semicircular blade was handy for long, straight cutouts. The kerf stayed even, and with painter’s tape down, tear-out was minimal. PVC and ABS were no trouble; with the speed dialed down and light pressure, the blades tracked cleanly without melting the edge.

A few notes that helped blade life and cut quality:
- Keep the RPM in the midrange for hardwood and plastics. High speed generates heat and shortens life.
- Clear chips with short, shallow pecks rather than muscling the blade through.
- If you see scorch marks, back off, let the blade cool, and resume with a lighter touch.

In terms of longevity, these wood-focused blades match what I expect from mid-grade generics. They don’t rival carbide-tooth blades in lifetime, but they’re far more affordable, and for trimming, drywall, and general carpentry, they held up well.

Cutting metals: know the limits

I leaned on the bi-metal and titanium bi-metal blades for three common tasks: trimming a nail flush after pulling a board, cutting an old copper stub-out, and notching light-gauge steel corner bead and electrical box tabs.

• Nails and screws: In softwood with occasional brad or finish nails, the titanium-coated bi-metals handled the hits without immediately rounding over. On deck screws and hardened fasteners, they dulled quickly. I could usually make the cut, but I wouldn’t plan on the blade doing much more afterward.
• Copper and brass: A fresh titanium bi-metal blade zipped through a 1/2-inch copper stub cleanly, leaving a usable cut for a cap. Heat discoloration set in after a couple of cuts, which is normal for this price point. Still, perfectly serviceable for one-off plumbing edits.
• Light-gauge steel: The blades worked for corner bead and thin electrical box tabs, but the tooth edges lost their bite after a small handful of cuts.

If your day is heavy on metal—EMT conduit, stainless fasteners, or lots of embedded screws—carbide-tooth or premium bi-metal blades are still the right choice. For incidental metal in remodeling, these are fine, especially if you accept them as consumables and swap as needed.

Accuracy, feel, and control

Balance and control depend more on the multi-tool than the blade, but blade geometry plays a role. The plunge blades in this kit have a modest taper that aids visibility and helps them start straight on a scribed line. The tooth sets are conservative, which keeps the cut from wandering but also means they’re not the fastest on aggressive demolition. I’ll take that tradeoff for cleaner edges in trim work.

I didn’t notice unusual vibration. On my DeWalt, the interface locked firmly; the blade tracked without chatter as long as I let the teeth do the work. Pushing hard introduces heat and chatter with any blade, and that’s true here as well.

Durability and consistency

Across the pack, quality was mostly consistent. The high-carbon steel wood blades lasted as expected on clean lumber and MDF, and dulled faster on dirty or paint-encrusted surfaces—which is normal. The titanium bi-metal blades outlasted the standard bi-metal on nails and thin steel, but they’re not indestructible. I did have one early failure: a wood blade that bent and cracked near the mount during an awkward plunge into chipboard. I chalked it up to a weak blade or poor technique; the others in that profile didn’t repeat the issue.

Tips to extend life:
- Score your line with a knife on veneered plywood to reduce tear-out.
- Let the blade cool between cuts, especially in metal.
- Use the narrowest blade that suits the task; it reduces heat and makes plunge starts easier.
- Mark depth on the blade with a Sharpie so you don’t overdrive into hidden fasteners.

Selection and where it could improve

Ten patterns in a 40-pack gives solid coverage for common tasks. I had what I needed for door undercuts, drywall openings, flush-cutting dowels and shims, and general trim tweaks. Where I wanted more was in metal-focused options and reach: an extra handful of longer, deeper-cut bi-metal blades would make the kit more rounded for renovation, and a carbide-tooth option would be a welcome upsell even if it bumped the price slightly. As it stands, you’ll burn through the metal blades faster than the wood ones, so plan accordingly.

Value

The biggest reason to buy a bulk kit is simple math. If you’re doing a kitchen or bath demo, or a run of built-ins, you’ll go through blades—sometimes because of nails or plaster grit, sometimes because you should swap rather than force a dull edge. With this kit, I didn’t feel precious about changing blades. The cost per blade is low, the performance on wood and drywall is fully adequate, and the metal blades are good enough for incidental work. Compared with buying individual brand-name blades, the savings add up fast.

Who it’s for

• DIYers and homeowners: Great for projects where you need a lot of blades that “just work” on wood, drywall, and plastics, with occasional metal.
• Remodelers and handypeople: A practical bulk pack for day-to-day tasks. Keep a couple of premium carbide blades in the pouch for heavy metal and you’re covered.
• Pros doing metal-heavy work: Skip this as your primary metal solution. It’s fine as a backup, but you’ll want higher-end carbide for speed and longevity.

The bottom line

The Bionso kit covers the essentials with a broad, useful selection, reliable compatibility, and respectable performance—especially in wood and plastics. The bi-metal and titanium bi-metal blades handle incidental metal, but they’re consumables, not workhorses. I had one early dud, but overall consistency was good for the price, and the interface fit my tools without fuss.

Recommendation: I recommend this kit as a value-forward, everyday stock of oscillating blades for wood, drywall, and plastic, with enough metal capability to get you through common remodel scenarios. If your work leans heavily into metal cutting, pair it with a few premium carbide blades. For everyone else, it’s an easy, budget-friendly way to keep your multi-tool ready for whatever the day throws at it.