Milwaukee M12 2426-20 Cordless Oscillating Multi-Tool: problems, parts and running costs

Checked: 2026-10-12

Summary

The 2426-20 is the older brushed-motor generation of Milwaukee’s M12 oscillating multi-tool: 5,000–20,000 OPM, a 12-setting speed dial, no LED light and no tool-free blade change, sold as a bare tool. Its recurring costs are the M12 battery and charger if you do not already own them plus blades and sanding sheets, and no per-year figure exists. It is a good buy under $100 for existing M12 owners; at $119 from most dealers the newer brushless M12 FUEL 2526-20, typically $20–$45 more, is the better tool.

Common problems and fixes

Brushed motor feels slower and rougher than the FUEL — r/MilwaukeeTool owners describe the 2426-20 as functional but outclassed: “It works, but the Fuel is World’s better”; the fix is spending the difference on the 2526-20 [1]. A comparative judgment, not a defect.
Bolt-on accessory attachment — no tool-free blade change; swapping blades and pads means bolts [2]. Budget extra time per accessory change.
No LED work light — none is listed in the manufacturer specs, so dark cut lines need a separate light [2].
Bare tool: battery and charger sold separately — the sticker is not the real cost; first-time M12 buyers must add a REDLITHIUM pack and charger [2][4].
Confusion with the M12 FUEL 2526-20 — retailers and search results routinely conflate the two, and some listings show 10,000–21,000 OPM where Milwaukee specifies 5,000–20,000 for the 2426-20 [3][2]. Verify the carton model before buying.

Parts and consumables

Sanding pad and 5 sanding sheets — the pad and five assorted sheets are included; the sanding sheets wear out and are the main recurring consumable [2][4].
M12 REDLITHIUM battery and charger — sold separately; share across the M12 platform, which is where the value sits for existing owners; replacement pricing not found in the sources [2][8].

Yearly running cost

There are no subscriptions and no scheduled consumable. If you already own M12 batteries, the only yearly cost is blades and sanding sheets, and no per-year figure exists in the sources. Not enough data.

When it is a good buy

Walmart listed the bare tool at $93.99 in October 2026; Acme Tools, Ace Hardware and Ballard Industrial listed it at $119.00 [6][4][7][3].
Value thresholds from the research pack: about $94–$100 is a reasonable entry point for existing M12 battery owners; $101–$119 weakens significantly; above $120 poor value.
The M12 FUEL 2526-20 bare tool sits at about $135–$159 at most retailers, a gap of $20–$45, with a brushless motor, 10,000 OPM floor, tool-free blade change, LED light and REDLINK PLUS intelligence [5][8]. Choose the FUEL unless you already own M12 batteries and find the 2426-20 under $100.
Warranty: 5-year limited warranty covering defects in materials and workmanship [10][9].