Milwaukee 2426-20 vs Bosch GOP40-30C: Oscillating Multi-Tools Compared
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The Milwaukee 2426-20 runs on M18 batteries. The Bosch GOP40-30C plugs into a wall. That fundamental split drives every other tradeoff here. The Milwaukee gives you cordless freedom for remodeling work scattered across a site. The Bosch gives you unlimited runtime and constant power for extended plunge-cutting sessions. Both are well-built tools that accept Starlock blades.
Quick Verdict
The Bosch GOP40-30C is the more refined tool. Faster top speed, stiffer Starlock blade mounting, and unlimited runtime make it the better choice for shop work and extended cutting sessions. The Milwaukee 2426-20 is the better remodeling tool. Cordless freedom and the wider oscillation angle let you work faster across a jobsite where running a cord to every room isn't practical.
Cordless and a 3.4-degree angle make short work of casings in every room without managing a cord.
Starlock precision, 20,000 OPM, and unlimited runtime. The cord is irrelevant 6 feet from an outlet.
Wider oscillation angle removes grout faster. Cordless means no cord dragging across wet tile.
Starlock blade connection wobbles less. Higher OPM leaves a smoother cut face.
Specs at a Glance
| Spec | Milwaukee 2426-20 | Bosch GOP40-30C |
|---|---|---|
| Oscillations Per Minute | 11,000 to 18,000 OPM | 8,000 to 20,000 OPM |
| Oscillation Angle | 3.4 degrees | 3.0 degrees |
| Blade Interface | OIS universal | Starlock / StarlockPlus |
| Power Source | 18V (M18) | 120V AC (corded) |
| Weight | 3.0 lb (bare) | 3.3 lb |
| Motor | Brushed | 4 Amp |
| Blade Change System | QUIK-LOK tool-free | Starlock snap-in (tool-free) |
Milwaukee 2426-20
Price: $129 (Home Depot)
Pros
- 3.4-degree oscillation angle is the widest in this comparison, cutting through wood and nails aggressively
- Cordless freedom means no cord management while you undercut 40 door casings across a house
- QUIK-LOK blade change doesn't require touching the hot blade after extended cuts
Cons
- Brushed motor is less efficient than the brushless Bosch, reducing battery life
- 18,000 OPM top speed is lower than the Bosch, limiting cut speed in hardwood
- Battery weight on top shifts the balance point higher than ideal for precision work
Bosch GOP40-30C
Price: $149 (Amazon)
Pros
- 20,000 OPM top speed cuts faster in hardwood and plaster than the Milwaukee
- Starlock interface provides a stiffer blade connection with less wobble than OIS
- Constant corded power means no performance drop as the battery depletes
Cons
- Power cord limits your reach and gets in the way during flush cuts against walls
- 3.3 lb is heavier than the Milwaukee bare tool (though without battery it evens out)
- $149 is $20 more, and you still need an extension cord for jobsite reach
Best For
Remodeling (undercutting casings, flush cuts, drywall cutouts)
Milwaukee 2426-20
Cordless and a 3.4-degree angle make short work of casings in every room without managing a cord.
Shop work (detailed cuts, sanding, scraping)
Bosch GOP40-30C
Starlock precision, 20,000 OPM, and unlimited runtime. The cord is irrelevant 6 feet from an outlet.
Grout removal in bathrooms
Milwaukee 2426-20
Wider oscillation angle removes grout faster. Cordless means no cord dragging across wet tile.
Precise flush cuts in hardwood
Bosch GOP40-30C
Starlock blade connection wobbles less. Higher OPM leaves a smoother cut face.
Frequently Asked Questions
What's the difference between OIS and Starlock blade interfaces?
OIS (universal) uses a pin-and-screw connection that fits most oscillating tool brands. Starlock uses a snap-in 3D interface that's stiffer and transfers more power to the blade with less wobble. Starlock blades are generally more expensive but cut more precisely.
Can I use Starlock blades in the Milwaukee?
Not directly. The Milwaukee uses OIS universal blade mounting. Some Starlock blades ship with an OIS adapter, but you lose the stiff 3D connection advantage. If Starlock matters to you, the Bosch is the way to go.
How many door casings can the Milwaukee cut on one battery?
On a 5.0Ah M18 battery, roughly 30 to 40 flush cuts through standard pine casings. Hardwood or laminate casings reduce that to 20 to 25. A compact 2.0Ah battery gets about half that.