BOSCH StarlockPlus Oscillating Multi-Tool Kit with Snap-In Blade Attachment GOP40-30B

The Bosch GOP40-30B Oscillating Multi-Tool Kit features the StarlockPlus 3-D tool-accessory interface which produces the best-in-class grip

About this item

  • Torque: The Bosch GOP40-30B Oscillating Multi-Tool Kit features the StarlockPlus 3-D tool-accessory interface which produces the best-in-class grip and greater torque transfer. Lightweight and compact, the GOP40-30B weighs only 3.3 lbs
  • Versatility: The GOP40-30B offers multi-tool versatility by accomplishing flush-cutting, plunge-cutting, sanding, grinding, and many other tasks
  • Compatible: The GOP40-30B features a dynamic accessory range by utilizing all Starlock and StarlockPlus accessories
  • Variable Speed: The oscillating tool includes a variable speed dial to adjust speeds from 8,000 to 20,000 oscillations per minute. The 4.0-amp motor with reinforced metal gearing provides heavy duty power
Category: Tools & Home ImprovementOscillating ToolsRanked #99 of 704 in Tools & Home Improvement
9.2Our score
Our verdict

The Bosch GOP40-30B Oscillating Multi-Tool Kit features the StarlockPlus 3-D tool-accessory interface which produces the best-in-class grip

Ranked #99 in Tools & Home Improvement · 4 things we like

Quick answer The BOSCH StarlockPlus Oscillating Multi-Tool Kit scores 9.2/10 with us. Amazon owners rate it 4.6 out of 5 across 193 reviews, above the 4.4 average of the 96 oscillating tools we track. It was listed at $229.00 on Amazon when we last checked in September 2026.

The Bosch GOP40-30B StarlockPlus®® Oscillating Multi-Tool Kit includes a tool that has the Starlock® next-generation 3-D tool-accessory interface, which produces best-in-class accessory grip, making it the new professional standard in oscillating tool performance. With more contact surface area between the tool and accessory, the Starlock® interface is a cupped 3-D tool-accessory connection that delivers greater torque transfer for an expanded work capacity. The no-touch blade-change system makes it easy to attach, remove or reposition blades.

The professional-grade 4.0 Amp motor delivers a top speed of up to 20,000 oscillations per minute, and the tool provides a 3.0° oscillating arc. A variable-speed dial allows the user to set the optimal speed for the task at hand, and Constant Response circuitry maintains the desired speed under load This robustly constructed tool has reinforced gea

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Product information

18 specifications
Voltage120 volts
Power SourceCorded Electric
Recommended Uses For ProductCutting, Grinding, Sanding
Other Special Features of the ProductLightweight
Maximum Rotational Speed20000 rpm
Number of Batteries1 Lithium Ion batteries required.
Minimum Speed8000 rpm
ColorNo Color
Style NameStarlockPlus
Item Weight3.3 pounds
Item Dimensions11 x 2.5 x 3.75 inches
Brand NameBosch
Included Components(1) OSL114F 1-1/4 In. Plunge Blade
Model NumberGOP40-30B
Unit Count1 Count
Number of Items1
Global Trade Identification Number00000346480139
Item Type NameOscillating Multi-Tool Kit

Pros & cons

What we like
  • TORQUE: The Bosch GOP40-30B Oscillating Multi-Tool Kit features the StarlockPlus 3-D tool-accessory interface which produces the best-in-class grip and greater torque transfer. Lightweight and compact, the GOP40-30B weighs only 3.3 lbs
  • VERSATILITY: The GOP40-30B offers multi-tool versatility by accomplishing flush-cutting, plunge-cutting, sanding, grinding, and many other tasks
  • COMPATIBLE: The GOP40-30B features a dynamic accessory range by utilizing all Starlock and StarlockPlus accessories
  • VARIABLE SPEED: The oscillating tool includes a variable speed dial to adjust speeds from 8,000 to 20,000 oscillations per minute. The 4.0-amp motor with reinforced metal gearing provides heavy duty power
What could be better

    BOSCH StarlockPlus Oscillating Multi-Tool Kit: questions & answers

    Is the BOSCH StarlockPlus Oscillating Multi-Tool Kit worth buying?

    Yes, it is one of the stronger picks in its group. We score the BOSCH StarlockPlus Oscillating Multi-Tool Kit 9.2 out of 10. Amazon owners rate it 4.6 out of 5 across 193 reviews, above the 4.4 average of the 96 oscillating tools we track.

    How much does the BOSCH StarlockPlus Oscillating Multi-Tool Kit cost?

    It was listed at $229.00 on Amazon when we last checked in September 2026. That is more than the $65.20 median for oscillating tools in our catalog. Amazon prices change daily, so use the price button on this page to see the current figure.

    What are good alternatives to the BOSCH StarlockPlus Oscillating Multi-Tool Kit?

    Similar, well-rated oscillating tools in our catalog: BOSCH GOP40-30C StarlockPlus Oscillating (9.4/10, 4.7 stars from 474 owners); BOSCH GOP18V-34B12 18V Brushless StarlockPlus® (9.4/10, 4.7 stars from 40 owners); Hammerhead 2.2-Amp Oscillating Multi-Tool Bundle (9.8/10, 4.5 stars from 2,437 owners).

    Customer reviews

    All reviews on Amazon
    4.6193 global ratings
    5 star90%
    4 star10%
    3 star0%
    2 star0%
    1 star0%

    Breakdown from the 10 most helpful reviews we imported.

    O
    Outwest
    Verified purchaseAugust 25, 2016
    GOP40 is a phenomenal multitool which a super fast on-off blade system; but note it will not fit OIS blades

    Ok, first know what you are getting: this is the latest in blade lock tech which both Bosch and Fein are doing: it is a no-touch on and off starlock system for these blades. It will not take the old OIS blades, and does not advertise that it will.What is confusing is that the OSL blades which work with this CAN be used on older Bosck multitools. So, there is blade compatibility backward, but again, the GOP40 will not take the OIS blades. The blade removal is absurdly easy: no more hex wrnech or tool to put blades on and off. They literally snap on, and with a turn of the lever, pop right off.

    C
    Chris
    Verified purchaseSeptember 9, 2026
    Great for so many projects.

    I wore out the previous Bosch oscillating tool after 10 years so it was a no brainer to get another one. The newer model has some improvements like the LED to light up work and the way the blade snaps into place. The nice thing about Bosch tools is that they have replacement parts available if you are inclined to repair instead of replace. Like other Bosch tools, this model seems to be durable and high quality.If I have to list a downside its that the older blades don't work directly with Starlock.

    D
    D Bennett
    Verified purchaseJune 16, 2024
    Multi-tool for multiple uses

    I honestly don't know how I managed with out a multi-tool in the past. My most recent project was way easier with the Bosch multi-tool. I can't remember the number of times I said, "Multi-tool!", when I came up against a new problem but it was many. One blade I would recommend getting is a knife blade (no teeth) as I've found that it is very handy when a regular toothed blade would scare a surface.Recommended.

    H
    H Miller
    Verified purchaseFebruary 19, 2026
    Star lock is the way to go!

    The quick change blades are great! The star blade attachment holds very firmly increasing more torque to the blade. Making cuts super quick and effective. And the onboard light is also a nice touch

    G
    Grego
    Verified purchaseAugust 26, 2024
    Feels like quality

    Love the soft start , good power, and adjustable speed. How did I ever get this old without buying one of these!? The only thing I wish it had was a rotating head like I’ve seen on Ryobi.

    A
    Adam
    Verified purchaseOctober 20, 2023
    Works but..

    It works, however the one I received was 100% without a doubt used and returned. It was beaten up, dings and scraps all over it, dirt and dust. It had dead grass all over it when i took it out of the box. If I didn't need it right away I would have returned it. Other then the tool being abused, the box was in good shape and all of its accessories WERE there. Nice tool, just wish my money went towards a new product.

    A
    Amazon Customer
    Verified purchaseDecember 3, 2016
    Happy Electrician

    I have the older version of this tool that requires an Allen wrench to change the blades. I've cut in hundreds of old work boxes in blue board and horse hair plaster and love the tool. Also works great on wood.I recently purchased this newer version and am very pleased with it. As an electrician this is one of the tools I use the most. The quick change blade system is much faster than the older version and the LED light is also a nice feature. The cord is also considerably longer in the newer version saving me from grabbing an extension cord. The blades are expensive but you get what you pay f

    R
    Russ
    Verified purchaseOctober 7, 2017
    Item is well balanced Even better - the sandpaper just attaches like Velcro and you ...

    This tool is outstanding - everyone talks about the cutting but I bought it for the sanding (redoing my banisters and front door - upgraded to 80 grit and it ripped away the poly and stain in all the tight spaces. What a time saver.I had it on full power for well over a hour and it never really got hot nor was too loud. Item is well balancedEven better - the sandpaper just attaches like Velcro and you can flip the head around in seconds - the extra cost here was well worth itSuggest bosch's videos add a section on this tools sanding abilities - don't just position the product to the pros, ever

    Customer reviews are shown as published on Amazon and are not written by Do Best Deal.