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Bosch

Bosch GLL40-20G 40 foot Self Leveling Green Beam VisiMax Cross Line Laser with Smart Pendulum System, Class II laser product, <5mW power output

  • Based on 1,659 reviews
Condition: Used - Good
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Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon
Arrives Sep 9 – Sep 26
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Style: 40ft


Features

  • Class II laser product, <5mW power output

Description

The Bosch GLL40-20G Self-Leveling Cross-Line Laser projects visible green laser lines, which are up to 2X brighter than standard red beams. The tool has a working range of up to 40 feet and offers reliable accuracy of +5/16 in. at 30 feet. It features Bosch-exclusive VisiMax™ technology, which monitors tool temperature and power consumption to deliver the brightest line for the job, optimized energy efficiency and long-term tool reliability. The cross-line laser is also equipped with a Smart Pendulum System allowing for automatic self-leveling and indication of out-of-level condition, as well as pendulum lock for safe tool transport. The included MM 2 Flexible Mounting Device provides a rotating 360 degree neck for quick setup and simple fine-tuning allowing for the laser to be clamped onto virtually any surface from 1/2 to 2-1/4 inches thick.

Brand: Bosch


Material: Plastic, Rubber


Color: Green,red


Product Dimensions: 2.3"L x 3.3"W


Style: 40ft


Brand: ‎Bosch


Material: ‎Plastic, Rubber


Color: ‎Green,red


Product Dimensions: ‎2.3"L x 3.3"W


Style: ‎40ft


Item Weight: ‎8 ounces


Operation Mode: ‎Automatic


UPC: ‎000346634792


Global Trade Identification Number: ‎92


Manufacturer: ‎BOSCH


Part Number: ‎GLL40-20G


Item model number: ‎GLL40-20G


Batteries: ‎2 AA batteries required. (included)


Is Discontinued By Manufacturer: ‎No


Size: ‎No Size


Power Source: ‎Battery Powered


Voltage: ‎1.5 Volts


Item Package Quantity: ‎1


Special Features: ‎green-line, self-leveling


Included Components: ‎(1) GLL40-20G Green-Beam Self-Leveling Cross-Line Laser, (1) Mounting Device, (1) Pouch, (2) AA Batteries


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Alkaline


Warranty Description: ‎Bosch measuring and layout tools are covered by a one year limited warranty with an additional year when you register your tool within eight weeks of purchase - for details, call 1-877-BOSCH99


Date First Available: December 1, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 9 – Sep 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Bosch Digital Level – Precision and Quality at Its Best!
Style: 50ft
Why I Love It: ✅ High Accuracy: The digital display provides incredibly precise readings, making it ideal for professional and DIY projects. ✅ Easy-to-Read Display: The illuminated, large LCD screen ensures clear visibility, even in dimly lit environments. ✅ Durable and Sturdy: The rugged construction with IP-rated protection makes it resistant to dust and water. ✅ Multiple Measurement Modes: It supports various angle measurements, including degrees, percentages, and millimeters per meter. ✅ Audio Indicator for Alignment: The beep function helps when you can't keep your eyes on the display, which is a great feature for hands-free leveling. ✅ Long Battery Life: It lasts through extended use, making it reliable for both indoor and outdoor jobs. ... show more
Reviewed in the United States on February 11, 2025 by Adrian Dobrei
    • Great brand, great product
Style: 50ft - Rechargeable
Bought this for my boyfriend and he absolutely loved it. It is extremely easy to use and install and has the perfect size. There are a lot of cheaper brands out there, but since this was a gift, I wanted it to be a good and known quality name.
Reviewed in the United States on August 7, 2025 by BbC
    • works better than expected
Style: 50ft
had doubts about the self leveling, but it works fine. the laser is a bit hard to see in bright outdoors. price is good though.
Reviewed in the United States on July 28, 2025 by sLOmO
    • Makes hanging pictures easy!
Style: 40ft
I got this for some DIY shelves on my TV wall. I was tired of using a tape measure, level, and constantly alternating between the two. This product took care of that. Very simple to use. The green laser is immediately visible even in bright sunlight and it allows for an easy to read section for installation. The only drawback is that it's very fidgety if it's not at the exact height. It has it's limitations unless you use a tripod with a tall range. Other than that, this is new necessary addition to my ever growing tool collection. ... show more
Reviewed in the United States on February 6, 2024 by Nick T
    • Legit little lazer
Style: 50ft
I work in a fab shop where things get abused, I’ve used this little guy a lot and it’s held up. The battery life seems to be ok if you don’t leave it on all day. Just really happy with it. Had it for over a year now
Reviewed in the United States on July 7, 2025 by Alex
    • Unwavering Accuracy, Effortless Leveling
Style: 50ft
The Bosch GLL50-20G laser self-leveling tool offers pinpoint accuracy. Its bright green laser lines are exceptionally visible, even in bright light. The self-leveling function is fast and reliable, saving precious time. The robust build quality inspires confidence and ensures long-term durability. The extended range makes it perfect for large projects. It's a game-changer for any professional or serious DIY enthusiast, delivering consistent and precise results. ... show more
Reviewed in the United States on March 13, 2025 by Matt D.
    • Good for indoor/night time use
Style: 50ft
Overall worked well. I was able to use it to level a patio I was pouring. I had to set this up after the sun went down to see the beam outside, but it worked. During the day, forget about it.
Reviewed in the United States on May 5, 2025 by clifford r pool
    • Poor range to the sides
Style: 50ft
Review Image by ashtong63 ashtong63
I thought this would be an upgrade but it's not nearly as useful as my old GLL2-45 red line laser. This one is brighter in the middle and the line is crisper, but the horizontal line visibility drops off quickly as you move to the side and doesn't wrap around the room nearly as effectively. The vertical angle is worse on this too. I re-posted another viewers photo here showing what I mean - my red laser will wrap around all 3 sides of a shower. ... show more
Reviewed in the United States on February 14, 2025 by ashtong63 ashtong63

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