Are Multi-Tool Blades Universal?
No — multi-tool blades are not universal. This is one of the most common misconceptions in the power tool world, and it leads to wasted money and frustration. While some blade types are marketed as “universal fit,” there are at least five major incompatible blade mounting systems in use across different brands. Buying the wrong blade for your tool is a genuine risk if you don’t check compatibility first.
Short Answer: No
Multi-tool blades are not universal. There are at least 5 different attachment systems, and fitting the wrong blade can damage your tool or simply won’t lock in. Always check your tool’s blade system before buying.
Why Multi-Tool Blades Aren’t Universal
The problem comes down to how the blade attaches to the tool. Different manufacturers use different mounting interfaces — the physical shape and mechanism that locks a blade into the oscillating head. These mounting interfaces are mostly incompatible with each other, meaning a blade designed for one system won’t physically fit a tool that uses a different system.
Here are the main blade attachment systems currently on the market:
| System | Used By | Cross-Compatible With |
|---|---|---|
| Starlock (Standard / Plus / Max) | Bosch (post-2016), Fein (post-2016), Makita (DTM52+), Hikoki, Metabo | Fits OIS tools (backwards-compatible). Does NOT fit DeWalt or Milwaukee natively. |
| OIS (Original Interface System) | Bosch (pre-2016), Fein (pre-2016), Makita (TM3010/DTM51), Einhell, many budget brands | Does NOT fit Starlock tools. Fits other OIS tools and universal clamps. |
| Universal Fit (Multi-Hole) | Ryobi, Dremel (newer), Craftsman, many third-party brands | Fits most OIS tools. Does NOT fit Starlock tools or DeWalt. |
| DeWalt Quick-Change (Horseshoe) | DeWalt DCS355, DWE315, DCS356 | DeWalt blades only. NOT compatible with any other system without third-party adapters. |
| Milwaukee OPEN-LOK | Milwaukee M18 FMT, M12 FMT | Proprietary, but universal adapter included with every tool — accepts most other brands’ blades. |
What About “Universal” Blades?
Blades marketed as “universal fit” or “multi-fit” are not truly universal. They use an open-backed design with multiple mounting holes that fit most common tools — primarily OIS-based tools, Ryobi, Dremel, and similar platforms. They are a safe bet for roughly 60–70% of oscillating tools on the market.
However, “universal” blades do not fit:
- Starlock-only tools (newer Bosch GOP, Makita DTM52, newer Fein) — these require Starlock blades
- DeWalt tools — the horseshoe mount is completely different
- Milwaukee OPEN-LOK — requires the included universal adapter
- Fein SuperCut — uses its own proprietary mount
How to Check Which Blades Fit Your Tool
The fastest way to identify your blade system is to look at the mounting point on your tool:
- Star-shaped push-fit mechanism (12-point star, press a lever to change blade) → You have a Starlock tool. Buy Starlock blades.
- Clamp with hex bolt or lever that tightens around a multi-hole blade → You have an OIS or universal-fit tool. Universal-fit, OIS, and Starlock blades all work.
- U-shaped horseshoe cutout with cam-lock → You have a DeWalt tool. Buy DeWalt blades only.
- OPEN-LOK three-point mount → You have a Milwaukee tool. OPEN-LOK blades natively; use included adapter for other brands.
You can also look up your specific tool model in our full compatibility chart, or check your brand’s dedicated page:
- Bosch multi-tool blades
- Makita multi-tool blades
- DeWalt multi-tool blades
- Milwaukee multi-tool blades
- Fein multi-tool blades
- Ryobi multi-tool blades
The Safest Blade to Buy If You’re Not Sure
If you genuinely don’t know what system your tool uses and can’t check, standard Starlock blades are the safest bet. They fit all Starlock tools and are backwards-compatible with all OIS tools. The only platforms they won’t fit are DeWalt (horseshoe) and Milwaukee (without adapter).
If you know your tool uses a universal clamp, “universal-fit” blade packs — often available in bulk for under £20 — are the cheapest way to stock up.
← Back to Multi-Tool Blade Compatibility Guide
