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Description
Bosch REVOLVE4000 Connected Self Leveling Rotary Laser Level Kit GRL4000-80CHK Red Beam 4000-Foot Range grading with CORE18V Battery and TripodPrecision at Massive Scale: The Ultimate 4,000 Foot Grading Solution The Bosch GRL4000 80CHK REVOLVE4000 Connected Rotary Laser is the definitive solution for large scale grading and leveling projects. Designed for extreme accuracy in both outdoor and indoor environments, this laser delivers a staggering 4,000 foot working range when paired with the included receiver. Whether you are grading for a foundation, setting drainage slopes, or aligning
Precision at Massive Scale: The Ultimate 4,000-Foot Grading Solution
The Bosch GRL4000-80CHK REVOLVE4000 Connected Rotary Laser is the definitive solution for large-scale grading and leveling projects. Designed for extreme accuracy in both outdoor and indoor environments, this laser delivers a staggering 4,000-foot working range when paired with the included receiver. Whether you are grading for a foundation, setting drainage slopes, or aligning commercial interiors, the Dual Dial-In Slope feature provides digital precision on both the X and Y axes, ensuring your jobsite meets exact specifications every time.
Built to survive the harshest environments, the REVOLVE4000 features a cage rubber overmold and an IP68 rating, making it fully protected against dust and water immersion. With integrated Bluetooth connectivity, you can control the unit remotely via the Bosch Leveling Remote App, reducing trips to the tripod. The innovative uCAL user-calibration system guides you step-by-step through the verification process, eliminating downtime and providing the confidence that your laser is accurate to ±1/16-inch at 100 feet.
Key Features
- Dual Dial-In Slope: Adjust slope angles digitally on both X and Y axes for precise grading.
- uCAL Step-by-Step Calibration: User-guided calibration avoids tool downtime and ensures jobsite accuracy.
- CORE18V & Dual Power: Powered by advanced CORE18V Li-ion technology with an alkaline adapter included for D-cell backup.
- Bluetooth Remote Control: Manage sleep mode, slope, and power from your smartphone using the free Bosch Leveling App.
- IP68 Jobsite Protection: Heavy-duty cage design built to withstand water immersion, dust, and drops.
- Extreme Range: Delivers high visibility and up to 4,000-ft coverage with the LR40 laser receiver.
What's Included
- (1) GRL4000-80CH REVOLVE4000 Connected Rotary Laser
- (1) LR40 Laser Receiver with Mounting Bracket
- (1) GBA18V40 CORE18V Lithium-Ion 4.0 Ah Battery
- (1) 18V Lithium-Ion Battery Charger
- (1) BT170 Heavy-Duty Aluminum Tripod
- (1) GR13 13-ft Grade Rod
- (1) BA1 Alkaline Battery Adapter
- (4) D-Cell Batteries & (2) AA batteries
- (1) Durable Hard Carrying Case
Specifications
| Accuracy | ±1/16-in @ 100-ft |
| Working Range (w/ Receiver) | Up to 4,000-ft |
| Self-Leveling Range | ±5 Degrees |
| Laser Color | Red Beam (635nm) |
| Protection Rating | IP68 (Dust & Water) |
| Battery Technology | Bosch CORE18V Li-Ion |
| Mount Threading | 5/8-in - 11 |
| Weight (Tool Only) | 47.3 lbs (Kit total) |
| Connectivity | Bluetooth Low Energy |
| Operating Temp Range | 14°F to 122°F |
Pro-Tip: To extend the life of your calibration, always store the rotary laser in its hard case with the pendulum lock engaged during transport. When working on vibrating jobsites (near heavy machinery), utilize the app to check for "out-of-level" alerts instantly without leaving your work station.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Love my chair!!!
Color: Onyx Black
Love my chair! I’m a student with rheumatoid arthritis and this has made studying much more comfortable. It has great back support, is really sturdy, and easy to use, I don’t feel like I’m going to fall when I tilt it back and use the footrest. It looks good too. It fits in well with my renovated warehouse apartment. Awesome value for the money. I bought mine on sale and it is worth every penny. Thanks!
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Reviewed in the United States on March 3, 2026
★★★★★ 5
My first time…and I like it.
Chairs can be tough to buy new without trying them out in person. You have no idea how it will feel, adjust, or breathe as you sit into it. The only way to know if what you’re getting is good or not is by taking a strangers word on the internet that it’s good. That being said, I’m very happy I listened to the strangers on this one.
Coming from exclusively leather, cushiony chairs my whole life, I had no idea what to expect out of its mesh cousin. I was looking for something comfortable like a leather seat with the added breathability that mesh provides. This chair hits all marks. It’s comfortable, it breathes, is fully adjustable and comes with easy to read instructions backed up by the best customer service I’ve ever received online in my last 20 years on the web.
The curves and contours of the chair fit my 5’10” 250 lb. frame nicely. The pneumatic adjustment is firm and cooperates well with any adjustments you might need. The upright position makes me feel like I slouch too much (which I probably do) and the lowest position almost makes me fall asleep (which I probably need). The casters glide as if on ice (after an upgrade, more on that later) and have no trouble changing course. The wheels might actually slide too well as now I have to plant my feet to stop myself on my wood floors. There is a “not included but provided upon request” lumbar pillow. The cushion is high quality but my back didn’t take to it very well. Not a knock on the chair, just my bad back. All in all, 5/5 so far.
All of Assembly is easy if you’ve ever put together any office chair ever. It’s the same. No surprises there. Steel construction with steel screws and a provided Allen wrench for the initial build. I would suggest using a battery powered drill at low speed for the screws. Having a power tool makes the job much quicker but isn’t necessary. All of the pieces are clean and free of any machining burrs. Again, 5/5.
Now we get to the customer service. The entire reason I decided to go with this chair was based on feedback provided by past customers. And I’m sure glad I listened. The lumbar pillow I spoke about only took a short email to acquire. Their friendly, helpful, and well spoken customer service agents are quick to reply and are always asking for feedback. I also mentioned earlier in the review that my casters were now good. That does mean the ones that it includes were not up to the standard of the rest of the chair for my weight. That being said, my wife, who is much smaller than I am, had no issues scooting around on the included wheels. Anyway, the company ended up sending me a replacement set of high quality nylon casters at no charge that tied up this experience in a nice little bow. The company did request the old wheels and base the be returned but the prepaid shipping label was provided. The option to have them arrange pickup of said items was also available. 5/5 with ease.
So there it is. My first review ever. I would be doing the manufacturer a disservice by not detailing the entire experience from exceptional construction to customer service rivaled by none. If you’re looking to give mesh chairs a shot, don’t be afraid. You will not regret it.
(I know this review was all positive. It was not sponsored. Unless you count the upgrades, but anyone can get those.)
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Reviewed in the United States on February 13, 2023
★★★★★ 5
Comfort, support, style, and durability in this chair!
Color: Lightbrown, Color: Lightbrown
🥰 Very sturdy and durable for everyday use in the office or at home! Perfect for sitting, planking, criss-cross Apple sauce, or whatever seating position you wanna call it lol.
🛠️ Assembly;
All the tools you need are provided in this kit! This took me all of 20 minutes to complete. Once you read the instructions, it’s pretty much placing screws in holes and done! No drilling needed! Cheers to the quick and easy process! Material is easy to clean, for keeping it in pristine condition!
🌟 Softness;
Very nice and plush backing! Sides come down just as advertised but requires a bit of force to do so which is perfect, as they aren’t just plopping down because you press on the arms. I was concerned that would be an issue, and it’s nothing to worry about!
Absolutely Love it, well designed for comfort / support, style, and adaptability!
✅ Stability;
Chair wheels glide as expected on my carpeted floor. Pretty much with ease on the tile surface. The chair feels sturdy, even with the adjustable height and backspring, ultimately a relaxing desk chair. I appreciate there not a lot of wobble and no noise when moving around.. I’m not getting wild here but you could totally plank on the chair if you wanted and it still remain stable!
👍✨ Overall, I would definitely recommend! Storage side pockets are a plus!
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Stylish, comfortable, and very practical
Color: Black, Color: Black
This chair is both cuteand funtional. The wide seat is super comfortable, especially for sitting cross-legged, and the flip-up arms are really convenient. I also like the side pockets for small items. It rolls smoothly, feels sturdy, and was easy to asssemble. Perfect for a home office or vanity setup.
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Nice office chair
Color: Beige
I recently purchased this chair for my home office setup. This chair is very comfortable and feels sturdy right out of the box. The seat cushion is thick and supportive, the back provides good support. I really like the flip-up armrests, which make it easy to slide the chair under my desk. Assembly was simple and didn't take long. Overall, it's a solid, well-built chair and a great value for the price.
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Reviewed in the United States on March 15, 2026